ramips: define image recipe for uncompressed uimage with loader

Some devices have bootloaders with broken lzma code resulting in failed
decompression or corrupted kernel code.
This image recipe allows to sacrifice 5KB for OpenWrt LZMA loader and
take over the task of decompress kernel.

Signed-off-by: Chuanhong Guo <[email protected]>

target/linux/ramips/image/Makefile

@@ -37,6 +37,11 @@ define Device/Default
   IMAGE/sysupgrade.bin := append-kernel | append-rootfs | pad-rootfs | append-metadata | check-size
 endef
 
+define Device/uimage-lzma-loader
+  LOADER_TYPE := bin
+  KERNEL := $(KERNEL_DTB) | loader-kernel | uImage none
+endef
+
 define Device/seama
   SEAMA_MTDBLOCK := 2
   IMAGES += factory.bin