ramips: adjust LZMA_TEXT_START for 32MB RAM devices

Currently the lzma-loader is placed in RAM at 32MB offset, which does not
make sense for devices with only 32MB RAM. If we adjust LZMA_TEXT_START to
24MB offset, then the lzma-loader can be used on those devices and still
about 24MB memory will be available for uncompressed image, which should be
enough for most use cases.

Signed-off-by: Sungbo Eo <mans0n@gorani.run>

target/linux/ramips/image/Makefile

@@ -64,7 +64,7 @@ define Build/loader-common
 		PKG_BUILD_DIR="$@.src" \
 		TARGET_DIR="$(dir $@)" LOADER_NAME="$(notdir $@)" \
 		BOARD="$(BOARDNAME)" PLATFORM="$(LOADER_PLATFORM)" \
-		LZMA_TEXT_START=0x82000000 LOADADDR=$(KERNEL_LOADADDR) \
+		LZMA_TEXT_START=0x81800000 LOADADDR=$(KERNEL_LOADADDR) \
 		$(1) compile loader.$(LOADER_TYPE)
 	mv "$@.$(LOADER_TYPE)" "$@"
 	rm -rf $@.src