[openwrt/openwrt] ath79: lzma-loader: fix & re-enable per-board CONFIG_BOARD_DEV

[LEDE Commits]

chunkeey pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/e9335c292003e15901ef5f665750f9493132eb28

commit e9335c292003e15901ef5f665750f9493132eb28
Author: Christian Lamparter <chunkeey at gmail.com>
AuthorDate: Sat Jul 31 22:56:29 2021 +0200

    ath79: lzma-loader: fix & re-enable per-board CONFIG_BOARD_DEV
    
    Back in the AR71XX days, the lzma-loader code could be customized
    based on the $BOARD variable. These would be passed as a
    compile-time -DCONFIG_BOARD_$DEVICE_MODEL flag to the compiler.
    Hence, the lzma-loader would be able to include device-specific
    fixups.
    
    Note: There's still a fixup for the TpLink TL-WR1043ND V1 found
    in the lzma-loader's board.c code. But since the days of AR71XX
    I couldn't find a forum post or bug reported. So, I left it
    as is to not break anything by enabling it.
    
    => If you have a TL-WR1043ND V1 and you have problem with
    the ethernet: let me know. Because otherwise, the fixup
    might simply no longer needed with ath79 and it can be removed.
    
    Signed-off-by: Christian Lamparter <chunkeey at gmail.com>
---
 target/linux/ath79/image/Makefile | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/target/linux/ath79/image/Makefile b/target/linux/ath79/image/Makefile
index 38c623bf27..768ec57044 100644
--- a/target/linux/ath79/image/Makefile
+++ b/target/linux/ath79/image/Makefile
@@ -27,14 +27,17 @@ define Build/loader-common
 endef
 
 define Build/loader-kernel
-	$(call Build/loader-common,LOADER_DATA="$@")
+	$(call Build/loader-common, \
+		LOADER_DATA="$@" \
+		BOARD="$(DEVICE_NAME)" )
 endef
 
 define Build/loader-okli-compile
 	$(call Build/loader-common, \
 		FLASH_OFFS=$(LOADER_FLASH_OFFS) \
 		FLASH_MAX=$(LOADER_FLASH_MAX) \
-		KERNEL_MAGIC=$(LOADER_KERNEL_MAGIC) )
+		KERNEL_MAGIC=$(LOADER_KERNEL_MAGIC) \
+		BOARD="$(DEVICE_NAME)" )
 endef
 
 # Arguments: <output name> <kernel offset>