diff --git a/buildroot-external/board/rpi3/kernel.config b/buildroot-external/board/rpi3/kernel.config
deleted file mode 100644
index d9e9b8d4a..000000000
--- a/buildroot-external/board/rpi3/kernel.config
+++ /dev/null
@@ -1,263 +0,0 @@
-CONFIG_LOCALVERSION="-v7"
-# CONFIG_LOCALVERSION_AUTO is not set
-CONFIG_KERNEL_LZ4=y
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_NO_HZ=y
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_BSD_PROCESS_ACCT_V3=y
-CONFIG_TASKSTATS=y
-CONFIG_TASK_DELAY_ACCT=y
-CONFIG_TASK_XACCT=y
-CONFIG_TASK_IO_ACCOUNTING=y
-CONFIG_LOG_BUF_SHIFT=18
-CONFIG_CGROUPS=y
-CONFIG_MEMCG=y
-CONFIG_MEMCG_SWAP=y
-CONFIG_BLK_CGROUP=y
-CONFIG_CGROUP_SCHED=y
-CONFIG_CFS_BANDWIDTH=y
-CONFIG_RT_GROUP_SCHED=y
-CONFIG_CGROUP_PIDS=y
-CONFIG_CGROUP_FREEZER=y
-CONFIG_CPUSETS=y
-CONFIG_CGROUP_DEVICE=y
-CONFIG_CGROUP_CPUACCT=y
-CONFIG_CGROUP_PERF=y
-CONFIG_USER_NS=y
-# CONFIG_COMPAT_BRK is not set
-CONFIG_PROFILING=y
-CONFIG_JUMP_LABEL=y
-CONFIG_BLK_DEV_THROTTLING=y
-CONFIG_PARTITION_ADVANCED=y
-CONFIG_CFQ_GROUP_IOSCHED=y
-CONFIG_ARCH_BCM=y
-CONFIG_ARCH_BCM2835=y
-# CONFIG_CACHE_L2X0 is not set
-CONFIG_SMP=y
-CONFIG_SCHED_SMT=y
-CONFIG_PREEMPT_VOLUNTARY=y
-CONFIG_ZSMALLOC=y
-CONFIG_CPU_FREQ=y
-CONFIG_CPU_FREQ_STAT=y
-CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE=y
-CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
-CONFIG_CPU_FREQ_GOV_USERSPACE=y
-CONFIG_CPU_FREQ_GOV_ONDEMAND=y
-CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
-CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
-# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
-# CONFIG_SUSPEND is not set
-CONFIG_PM=y
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_XFRM_USER=y
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_IP_ADVANCED_ROUTER=y
-CONFIG_IP_MULTIPLE_TABLES=y
-CONFIG_IP_ROUTE_MULTIPATH=y
-CONFIG_IP_ROUTE_VERBOSE=y
-CONFIG_IP_PNP=y
-CONFIG_IP_PNP_DHCP=y
-CONFIG_IP_PNP_BOOTP=y
-CONFIG_IP_PNP_RARP=y
-CONFIG_IP_MROUTE=y
-CONFIG_IP_PIMSM_V1=y
-CONFIG_IP_PIMSM_V2=y
-CONFIG_SYN_COOKIES=y
-CONFIG_INET_ESP=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_DIAG is not set
-CONFIG_TCP_CONG_ADVANCED=y
-# CONFIG_TCP_CONG_BIC is not set
-# CONFIG_TCP_CONG_WESTWOOD is not set
-# CONFIG_TCP_CONG_HTCP is not set
-CONFIG_TCP_MD5SIG=y
-CONFIG_INET6_AH=y
-CONFIG_INET6_ESP=y
-CONFIG_NETLABEL=y
-CONFIG_NETWORK_SECMARK=y
-CONFIG_NETFILTER=y
-CONFIG_NF_CONNTRACK=y
-CONFIG_NF_CONNTRACK_FTP=y
-CONFIG_NF_CONNTRACK_TFTP=y
-CONFIG_NETFILTER_XT_MATCH_ADDRTYPE=y
-CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y
-CONFIG_NETFILTER_XT_MATCH_IPVS=y
-CONFIG_IP_VS=y
-CONFIG_IP_VS_RR=y
-CONFIG_IP_VS_NFCT=y
-CONFIG_NF_CONNTRACK_IPV4=y
-CONFIG_IP_NF_IPTABLES=y
-CONFIG_IP_NF_FILTER=y
-CONFIG_IP_NF_NAT=y
-CONFIG_IP_NF_TARGET_MASQUERADE=y
-CONFIG_BRIDGE=y
-CONFIG_NET_SCHED=y
-CONFIG_NET_CLS_CGROUP=y
-CONFIG_NET_EMATCH=y
-CONFIG_NET_CLS_ACT=y
-CONFIG_NET_L3_MASTER_DEV=y
-CONFIG_CGROUP_NET_PRIO=y
-CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-CONFIG_CONNECTOR=y
-CONFIG_ZRAM=y
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_LOOP_MIN_COUNT=4
-CONFIG_BLK_DEV_SD=y
-CONFIG_BLK_DEV_SR=y
-CONFIG_BLK_DEV_SR_VENDOR=y
-CONFIG_CHR_DEV_SG=y
-CONFIG_SCSI_CONSTANTS=y
-CONFIG_SCSI_SPI_ATTRS=y
-# CONFIG_SCSI_LOWLEVEL is not set
-CONFIG_ATA=y
-CONFIG_NETDEVICES=y
-CONFIG_DUMMY=y
-CONFIG_MACVLAN=y
-CONFIG_IPVLAN=y
-CONFIG_VXLAN=y
-CONFIG_NETCONSOLE=y
-CONFIG_VETH=y
-CONFIG_USB_RTL8150=y
-CONFIG_USB_RTL8152=y
-CONFIG_USB_LAN78XX=y
-CONFIG_USB_USBNET=y
-CONFIG_INPUT_POLLDEV=y
-CONFIG_INPUT_EVDEV=y
-CONFIG_INPUT_JOYSTICK=y
-CONFIG_INPUT_TABLET=y
-CONFIG_INPUT_TOUCHSCREEN=y
-CONFIG_INPUT_MISC=y
-CONFIG_SERIO_RAW=y
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_SERIAL_8250=y
-CONFIG_SERIAL_8250_CONSOLE=y
-CONFIG_SERIAL_8250_NR_UARTS=32
-CONFIG_SERIAL_8250_EXTENDED=y
-CONFIG_SERIAL_8250_MANY_PORTS=y
-CONFIG_SERIAL_8250_SHARE_IRQ=y
-CONFIG_SERIAL_8250_DETECT_IRQ=y
-CONFIG_SERIAL_8250_RSA=y
-CONFIG_RAW_DRIVER=y
-CONFIG_I2C_CHARDEV=y
-CONFIG_I2C_MUX=y
-CONFIG_I2C_MUX_GPMUX=y
-CONFIG_I2C_MUX_PCA954x=y
-# CONFIG_I2C_HELPER_AUTO is not set
-CONFIG_I2C_BCM2708=y
-CONFIG_I2C_BCM2835=y
-CONFIG_I2C_GPIO=y
-CONFIG_I2C_ROBOTFUZZ_OSIF=y
-CONFIG_I2C_TINY_USB=y
-CONFIG_SPI=y
-CONFIG_SPI_BCM2835=y
-CONFIG_SPI_BCM2835AUX=y
-CONFIG_SPI_SPIDEV=y
-CONFIG_SPI_SLAVE=y
-CONFIG_PPS=y
-CONFIG_PPS_CLIENT_LDISC=y
-CONFIG_PPS_CLIENT_GPIO=y
-CONFIG_PINCTRL_MCP23S08=y
-CONFIG_POWER_RESET=y
-CONFIG_POWER_RESET_GPIO=y
-CONFIG_THERMAL=y
-CONFIG_BCM2835_THERMAL=y
-CONFIG_WATCHDOG=y
-CONFIG_GPIO_WATCHDOG=y
-CONFIG_BCM2835_WDT=y
-CONFIG_REGULATOR=y
-CONFIG_DRM=y
-CONFIG_FB_MODE_HELPERS=y
-CONFIG_FB_TILEBLITTING=y
-CONFIG_SOUND=y
-CONFIG_SND=y
-CONFIG_SND_HRTIMER=y
-# CONFIG_SND_SUPPORT_OLD_API is not set
-# CONFIG_SND_VERBOSE_PROCFS is not set
-CONFIG_SND_SEQUENCER=y
-# CONFIG_SND_ARM is not set
-# CONFIG_SND_SPI is not set
-CONFIG_SND_SOC=y
-CONFIG_SND_SOC_ADAU1701=y
-CONFIG_SND_SOC_ADAU7002=y
-CONFIG_SND_SOC_AK4554=y
-CONFIG_SND_SOC_CS4271_I2C=y
-CONFIG_SND_SOC_SPDIF=y
-CONFIG_SND_SOC_WM8804_I2C=y
-CONFIG_HIDRAW=y
-CONFIG_HID_GYRATION=y
-CONFIG_LOGITECH_FF=y
-CONFIG_HID_NTRIG=y
-CONFIG_HID_PANTHERLORD=y
-CONFIG_PANTHERLORD_FF=y
-CONFIG_HID_PETALYNX=y
-CONFIG_HID_SAMSUNG=y
-CONFIG_HID_SUNPLUS=y
-CONFIG_HID_TOPSEED=y
-CONFIG_HID_PID=y
-CONFIG_USB_HIDDEV=y
-CONFIG_USB=y
-CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
-CONFIG_USB_MON=y
-CONFIG_USB_EHCI_HCD=y
-CONFIG_USB_OHCI_HCD=y
-CONFIG_USB_PRINTER=y
-CONFIG_USB_STORAGE=y
-CONFIG_MMC=y
-# CONFIG_PWRSEQ_EMMC is not set
-# CONFIG_PWRSEQ_SIMPLE is not set
-CONFIG_MMC_BLOCK_MINORS=32
-CONFIG_MMC_BCM2835_MMC=y
-CONFIG_MMC_BCM2835_DMA=y
-CONFIG_MMC_BCM2835_SDHOST=y
-CONFIG_MMC_SDHCI=y
-CONFIG_MMC_SDHCI_PLTFM=y
-CONFIG_RTC_CLASS=y
-# CONFIG_RTC_HCTOSYS is not set
-CONFIG_DMADEVICES=y
-CONFIG_DMA_BCM2835=y
-CONFIG_DMA_BCM2708=y
-CONFIG_MAILBOX=y
-CONFIG_BCM2835_MBOX=y
-CONFIG_RASPBERRYPI_POWER=y
-CONFIG_DAX=y
-CONFIG_RASPBERRYPI_FIRMWARE=y
-CONFIG_EXT4_FS=y
-CONFIG_EXT4_FS_POSIX_ACL=y
-CONFIG_EXT4_FS_SECURITY=y
-CONFIG_AUTOFS4_FS=y
-CONFIG_OVERLAY_FS=y
-CONFIG_ISO9660_FS=y
-CONFIG_JOLIET=y
-CONFIG_ZISOFS=y
-CONFIG_MSDOS_FS=y
-CONFIG_VFAT_FS=y
-CONFIG_SQUASHFS=y
-CONFIG_SQUASHFS_XATTR=y
-CONFIG_SQUASHFS_LZ4=y
-# CONFIG_NETWORK_FILESYSTEMS is not set
-CONFIG_NLS_DEFAULT="utf8"
-CONFIG_NLS_CODEPAGE_437=y
-CONFIG_NLS_ASCII=y
-CONFIG_NLS_ISO8859_1=y
-CONFIG_NLS_UTF8=y
-CONFIG_PRINTK_TIME=y
-# CONFIG_ENABLE_WARN_DEPRECATED is not set
-CONFIG_MAGIC_SYSRQ=y
-CONFIG_KEYS=y
-CONFIG_SECURITY=y
-CONFIG_SECURITY_APPARMOR=y
-CONFIG_CRYPTO_CCM=y
-CONFIG_CRYPTO_GCM=y
-CONFIG_CRYPTO_CMAC=y
-CONFIG_CRYPTO_ARC4=y
-CONFIG_CRYPTO_LZ4=y