kernel-firmware: install brcmfmac 43430/43455 for all but RPi

brcmfmac43455-based hardware is now being used by x86_64 users, so we need to install the relevant firmwares from
linux-firmware, and limit deletion of these firmwares to only when building for RPi (which uses alternative and
possibly hardware specific firmware variants).

Hack in the missing 43430/43455 config files as Broadcom/Cypress don't see fit to publish these to linux-firmware. The
initial source for these files is the brcmfmac_sdio-firmware-rpi repo.

Ref: https://forum.libreelec.tv/thread/11249-how-to-change-files-on-read-only-file-system/?postID=104334#post104334

packages/linux-firmware/kernel-firmware/package.mk

@@ -44,8 +44,10 @@ makeinstall_target() {
   done
 
   # The following files are RPi specific and installed by brcmfmac_sdio-firmware-rpi instead
-  rm -fr $FW_TARGET_DIR/brcm/brcmfmac43430*-sdio.bin
-  rm -fr $FW_TARGET_DIR/brcm/brcmfmac43455*-sdio.bin
+  if listcontains "${FIRMWARE}" "brcmfmac_sdio-firmware-rpi"; then
+    rm -fr $FW_TARGET_DIR/brcm/brcmfmac43430*-sdio.*
+    rm -fr $FW_TARGET_DIR/brcm/brcmfmac43455*-sdio.*
+  fi
 
   # Cleanup - which may be project or device specific
   find_file_path scripts/cleanup.sh && ${FOUND_PATH} ${FW_TARGET_DIR} || true

packages/linux-firmware/kernel-firmware/patches/kernel-firmware-02-add-brcmfmac-43xxx-configs.patch

@@ -0,0 +1,188 @@
+From 1e6e0b28cd5b3e621e012169563d45748734b721 Mon Sep 17 00:00:00 2001
+From: MilhouseVH <milhouseVH.github@nmacleod.com>
+Date: Thu, 29 Nov 2018 23:47:02 +0000
+Subject: [PATCH] add missing brcmfmac434[30,55]-sdio.txt config files
+
+---
+ brcm/brcmfmac43430-sdio.txt | 64 ++++++++++++++++++++++++++++++
+ brcm/brcmfmac43455-sdio.txt | 97 +++++++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 161 insertions(+)
+ create mode 100644 brcm/brcmfmac43430-sdio.txt
+ create mode 100644 brcm/brcmfmac43455-sdio.txt
+
+diff --git a/brcm/brcmfmac43430-sdio.txt b/brcm/brcmfmac43430-sdio.txt
+new file mode 100644
+index 0000000..e644e6a
+--- /dev/null
++++ b/brcm/brcmfmac43430-sdio.txt
+@@ -0,0 +1,64 @@
++# NVRAM file for BCM943430WLSELG
++# 2.4 GHz, 20 MHz BW mode
++
++# The following parameter values are just placeholders, need to be updated.
++manfid=0x2d0
++prodid=0x0726
++vendid=0x14e4
++devid=0x43e2
++boardtype=0x0726
++boardrev=0x1202
++boardnum=22
++macaddr=00:90:4c:c5:12:38
++sromrev=11
++boardflags=0x00404201
++boardflags3=0x08000000
++xtalfreq=37400
++#xtalfreq=19200
++nocrc=1
++ag0=255
++aa2g=1
++ccode=ALL
++
++pa0itssit=0x20
++extpagain2g=0
++
++#PA parameters for 2.4GHz, measured at CHIP OUTPUT
++pa2ga0=-168,7161,-820
++AvVmid_c0=0x0,0xc8
++cckpwroffset0=5
++
++# PPR params
++maxp2ga0=84
++txpwrbckof=6
++cckbw202gpo=0
++legofdmbw202gpo=0x66111111
++mcsbw202gpo=0x77711111
++propbw202gpo=0xdd
++
++# OFDM IIR :
++ofdmdigfilttype=18
++ofdmdigfilttypebe=18
++# PAPD mode:
++papdmode=1
++papdvalidtest=1
++pacalidx2g=32
++papdepsoffset=-36
++papdendidx=61
++
++il0macaddr=00:90:4c:c5:12:38
++wl0id=0x431b
++
++deadman_to=0xffffffff
++# muxenab: 0x1 for UART enable, 0x2 for GPIOs, 0x8 for JTAG
++muxenab=0x1
++# CLDO PWM voltage settings - 0x4 - 1.1 volt
++#cldo_pwm=0x4
++
++#VCO freq 326.4MHz
++spurconfig=0x3 
++
++# Experimental Bluetooth coexistence parameters from Cypress
++btc_mode=1
++btc_params8=0x4e20
++btc_params1=0x7530
+diff --git a/brcm/brcmfmac43455-sdio.txt b/brcm/brcmfmac43455-sdio.txt
+new file mode 100644
+index 0000000..04b6570
+--- /dev/null
++++ b/brcm/brcmfmac43455-sdio.txt
+@@ -0,0 +1,97 @@
++# Cloned from bcm94345wlpagb_p2xx.txt 
++NVRAMRev=$Rev: 498373 $
++sromrev=11
++vendid=0x14e4
++devid=0x43ab
++manfid=0x2d0
++prodid=0x06e4
++#macaddr=00:90:4c:c5:12:38
++macaddr=b8:27:eb:74:f2:6c
++nocrc=1
++boardtype=0x6e4
++boardrev=0x1304
++
++#XTAL 37.4MHz
++xtalfreq=37400
++
++btc_mode=1
++#------------------------------------------------------
++#boardflags: 5GHz eTR switch by default
++#            2.4GHz eTR switch by default
++#            bit1 for btcoex
++boardflags=0x00480201
++boardflags2=0x40800000
++boardflags3=0x48200100
++phycal_tempdelta=15
++rxchain=1
++txchain=1
++aa2g=1
++aa5g=1
++tssipos5g=1
++tssipos2g=1
++femctrl=0
++AvVmid_c0=1,165,2,100,2,100,2,100,2,100
++pa2ga0=-129,6525,-718
++pa2ga1=-149,4408,-601
++pa5ga0=-185,6836,-815,-186,6838,-815,-184,6859,-815,-184,6882,-818
++pa5ga1=-202,4285,-574,-201,4312,-578,-196,4391,-586,-201,4294,-575
++itrsw=1
++pdoffsetcckma0=2
++pdoffset2gperchan=0,-2,1,0,1,0,1,1,1,0,0,-1,-1,0
++pdoffset2g40ma0=16
++pdoffset40ma0=0x8888
++pdoffset80ma0=0x8888
++extpagain5g=2
++extpagain2g=2
++tworangetssi2g=1
++tworangetssi5g=1
++# LTECX flags
++# WCI2
++ltecxmux=0
++ltecxpadnum=0x0504
++ltecxfnsel=0x22
++ltecxgcigpio=0x32
++
++maxp2ga0=80
++ofdmlrbw202gpo=0x0022
++dot11agofdmhrbw202gpo=0x4442
++mcsbw202gpo=0x98444422
++mcsbw402gpo=0x98444422
++maxp5ga0=82,82,82,82
++mcsbw205glpo=0xb9555000
++mcsbw205gmpo=0xb9555000
++mcsbw205ghpo=0xb9555000
++mcsbw405glpo=0xb9555000
++mcsbw405gmpo=0xb9555000
++mcsbw405ghpo=0xb9555000
++mcsbw805glpo=0xb9555000
++mcsbw805gmpo=0xb9555000
++mcsbw805ghpo=0xb9555000
++
++swctrlmap_2g=0x00000000,0x00000000,0x00000000,0x010000,0x3ff
++swctrlmap_5g=0x00100010,0x00200020,0x00200020,0x010000,0x3fe
++swctrlmapext_5g=0x00000000,0x00000000,0x00000000,0x000000,0x3
++swctrlmapext_2g=0x00000000,0x00000000,0x00000000,0x000000,0x3
++
++vcodivmode=1
++deadman_to=481500000
++
++ed_thresh2g=-54
++ed_thresh5g=-54
++eu_edthresh2g=-54
++eu_edthresh5g=-54
++ldo1=4
++rawtempsense=0x1ff
++cckPwrIdxCorr=3
++cckTssiDelay=150
++ofdmTssiDelay=150
++txpwr2gAdcScale=1
++txpwr5gAdcScale=1
++dot11b_opts=0x3aa85
++cbfilttype=1
++fdsslevel_ch11=6
++
++# Experimental Bluetooth coexistence parameters from Cypress
++btc_mode=1
++btc_params8=0x4e20
++btc_params1=0x7530
+-- 
+2.14.1
+