projects/RPi/linux: enable CMA support

Signed-off-by: Stephan Raue <stephan@openelec.tv>

projects/RPi/linux/linux.arm.conf

@@ -384,6 +384,7 @@ CONFIG_FLATMEM=y
 CONFIG_FLAT_NODE_MEM_MAP=y
 CONFIG_HAVE_MEMBLOCK=y
 CONFIG_NO_BOOTMEM=y
+CONFIG_MEMORY_ISOLATION=y
 # CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
 CONFIG_PAGEFLAGS_EXTENDED=y
 CONFIG_SPLIT_PTLOCK_CPUS=4
@@ -397,7 +398,8 @@ CONFIG_CROSS_MEMORY_ATTACH=y
 CONFIG_NEED_PER_CPU_KM=y
 CONFIG_CLEANCACHE=y
 CONFIG_FRONTSWAP=y
-# CONFIG_CMA is not set
+CONFIG_CMA=y
+# CONFIG_CMA_DEBUG is not set
 # CONFIG_ZBUD is not set
 # CONFIG_ZSWAP is not set
 # CONFIG_ZSMALLOC is not set
@@ -840,6 +842,18 @@ CONFIG_REGMAP_I2C=m
 CONFIG_REGMAP_SPI=m
 CONFIG_REGMAP_MMIO=m
 CONFIG_DMA_SHARED_BUFFER=y
+CONFIG_DMA_CMA=y
+
+#
+# Default contiguous memory area size:
+#
+CONFIG_CMA_SIZE_MBYTES=5
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
 
 #
 # Bus devices
@@ -1289,6 +1303,7 @@ CONFIG_HW_RANDOM_BCM2708=y
 # CONFIG_RAW_DRIVER is not set
 # CONFIG_TCG_TPM is not set
 CONFIG_BRCM_CHAR_DRIVERS=y
+CONFIG_BCM_VC_CMA=y
 CONFIG_I2C=y
 CONFIG_I2C_BOARDINFO=y
 # CONFIG_I2C_COMPAT is not set