ath79: lzma-loader: expose LZMA_TEXT_ADDRESS configuration again

initramfs for some devices grew so big, that it can't be loaded within
the previous 32MB RAM limit. Make the LZMA_TEXT_ADDRESS configurable
per-target once again, to fix it for bigger devices, while maintaining
compatibility with previous ones.

Signed-off-by: Lech Perczak <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/17616
Signed-off-by: Hauke Mehrtens <[email protected]>
(cherry picked from commit 6720958659d226e71dca49657202e0502bb059bd)

target/linux/ath79/image/Makefile

@@ -4,7 +4,7 @@ include $(INCLUDE_DIR)/image.mk
 KERNEL_LOADADDR = 0x80060000
 
 DEVICE_VARS += LOADER_FLASH_OFFS LOADER_TYPE
-DEVICE_VARS += LOADER_FLASH_MAX LOADER_KERNEL_MAGIC
+DEVICE_VARS += LOADER_FLASH_MAX LOADER_KERNEL_MAGIC LZMA_TEXT_START
 DEVICE_VARS += NETGEAR_BOARD_ID NETGEAR_HW_ID
 DEVICE_VARS += RAS_BOARD RAS_ROOTFS_SIZE RAS_VERSION
 DEVICE_VARS += SEAMA_SIGNATURE SEAMA_MTDBLOCK
@@ -14,6 +14,7 @@ define Build/loader-common
 	$(MAKE) -C lzma-loader \
 		PKG_BUILD_DIR="[email protected]" \
 		TARGET_DIR="$(dir $@)" LOADER_NAME="$(notdir $@)" \
+		LZMA_TEXT_START=$(LZMA_TEXT_START) \
 		$(1) compile loader.$(LOADER_TYPE)
 	mv "$@.$(LOADER_TYPE)" "$@"
 	rm -rf [email protected]
@@ -74,6 +75,7 @@ define Device/Default
   LOADER_FLASH_MAX :=
   LOADER_FLASH_OFFS :=
   LOADER_TYPE :=
+  LZMA_TEXT_START := 0x81800000
   COMPILE :=
   IMAGES := sysupgrade.bin
   IMAGE/sysupgrade.bin = append-kernel | pad-to $$$$(BLOCKSIZE) | \