[Task]: bring the uboot-btrfs extension to more boards

[leggewie]

Task description

with #9010 and #9011 landed, we should aim to bring the uboot-btrfs extension to more boards

• d5bceb9 rock-5b
• 626cd5b cm3588-nas
• d9a0bb9 khadas-vim3l
• 431a598 nanopi-r6c
• 171f69f odroidhc4
• de1f49f odroidm1s
• 61edafa nanopct6
• 1d8b386 odroidm1
• 3b90c35 armsom-forge1

There are

• patch/u-boot/v2025.10/board_rk3318-box/rk3318-box-add-defconfig.patch
• patch/u-boot/v2025.01/board_rk3318-box/rk3318-box-add-defconfig.patch
• patch/u-boot/u-boot-meson-s4t7/Update-kvim4_defconfig.patch
• patch/u-boot/v2024.10/board_gateway-gz80x/001-Add-board-Amper-Gateway-AM-GZ80x.patch

It probably makes sense to find out since what version u-boot has the CONFIG_CMD_BTRFS switch. Then the extension can be augmented to test for whether or not the currently compiled version is more recent and simply do nothing on earlier u-boot versions.

[github-actions]

Jira ticket: AR-2789

[iav]

There how to enable BTRFS in older uBoot

build/lib/functions/compilation/uboot.sh

Lines 97 to 108 in ede82db

	# for modern (? 2018-2019?) kernel and non spi targets @TODO: this does not belong here
	if [[ ${BOOTBRANCH} =~ ^tag:v201[8-9](.*) && ${target} != "spi" && -f .config ]]; then
	display_alert "Hacking ENV stuff in u-boot config 2018-2019" "for ${target}" "debug"
	sed -i 's/^.*CONFIG_ENV_IS_IN_FAT.*/# CONFIG_ENV_IS_IN_FAT is not set/g' .config
	sed -i 's/^.*CONFIG_ENV_IS_IN_EXT4.*/CONFIG_ENV_IS_IN_EXT4=y/g' .config
	sed -i 's/^.*CONFIG_ENV_IS_IN_MMC.*/# CONFIG_ENV_IS_IN_MMC is not set/g' .config
	sed -i 's/^.*CONFIG_ENV_IS_NOWHERE.*/# CONFIG_ENV_IS_NOWHERE is not set/g' .config
	echo "# CONFIG_ENV_IS_NOWHERE is not set" >> .config
	echo 'CONFIG_ENV_EXT4_INTERFACE="mmc"' >> .config
	echo 'CONFIG_ENV_EXT4_DEVICE_AND_PART="0:auto"' >> .config
	echo 'CONFIG_ENV_EXT4_FILE="/boot/boot.env"' >> .config
	fi