OrangePi 3 LTS: Use extlinux and remove aw859a-wifi.service

For "reasons" extlinux provides a more stable boot.

Remove aw859a-wifi.service:
The service modprobes sprdwl_ng later in the boot process. Which
is not required. Just enabling it in modules-load.d will suffice.

I believe the reasoning for this service was to prevent a crash
which occurs if sprdwl_ng loads before cpufreq_dt. To prevent
the crash we will set in the defconfig CONFIG_CPUFREQ_DT=y.

Signed-off-by: Patrick Yavitz <pyavitz@gmail.com>

Author: pyavitz

config/boards/orangepi3-lts.conf

@@ -3,14 +3,15 @@ BOARD_NAME="Orange Pi 3 LTS"
 BOARD_VENDOR="xunlong"
 BOARDFAMILY="sun50iw6"
 BOARD_MAINTAINER="pyavitz"
-BOOT_FDT_FILE="sun50i-h6-orangepi-3-lts.dtb"
+BOOT_FDT_FILE="allwinner/sun50i-h6-orangepi-3-lts.dtb"
 BOOTCONFIG="orangepi_3_lts_defconfig"
 BOOT_LOGO="desktop"
-MODULES_BLACKLIST="sunxi_addr" # Still loads but later in the boot process
 CRUSTCONFIG="orangepi_3_lts_defconfig"
 KERNEL_TARGET="current,edge"
 KERNEL_TEST_TARGET="current"
 PACKAGE_LIST_BOARD="rfkill bluetooth bluez bluez-tools"
+SRC_EXTLINUX="yes"
+SRC_CMDLINE="console=tty1 console=ttyS0,115200n8 loglevel=1"
 
 function post_family_config__use_orangepi3lts_uboot() {
 	case $BRANCH in
@@ -50,14 +51,14 @@ function post_family_tweaks_bsp__uwe5622_wireless() {
 		[Install]
 		WantedBy=multi-user.target
 		EOT
-		cp -f "$SRC/packages/bsp/sunxi/aw859a-wifi.service" "${destination}"/etc/systemd/system/
 		mkdir -p "${destination}"/etc/modules-load.d
 		# Add needed wireless modules
 		cat > "${destination}"/etc/modules-load.d/uwe5622-wireless.conf <<- EOT
 		hci_uart
 		bnep
 		rfcomm
 		sprdbt_tty
+		sprdwl_ng
 		EOT
 	fi
 }
@@ -66,7 +67,6 @@ function post_family_tweaks_bsp__uwe5622_wireless() {
 function post_family_tweaks__enable_uwe5622_wireless_services() {
 	display_alert "$BOARD" "Enabling UWE5622 Wireless Services" "info"
 	chroot_sdcard systemctl --no-reload enable sprd-bluetooth.service
-	chroot_sdcard systemctl --no-reload enable aw859a-wifi.service
 }
 
 function post_family_config__opi3lts_set_asoundstate_file() {