ar71xx/image: allow builds of loader without cmdline injecting

On most platforms the cmdline is supplied by the loader to the kernel.
When using an elf loader with cmdline the size is bloated by 512k.
For loader-elf platforms like the cpe510 better use loader-elf but patch
the cmdline into the kernel.

wdr1043: Tested loader still works using sysupgade image.

Signed-off-by: Alexander Couzens <lynxis@fe80.eu>

SVN-Revision: 49080

target/linux/ar71xx/image/Makefile

@@ -78,7 +78,7 @@ define Build/loader-common
 	$(MAKE) -C lzma-loader \
 		PKG_BUILD_DIR="$@.src" \
 		TARGET_DIR="$(dir $@)" LOADER_NAME="$(notdir $@)" \
-		KERNEL_CMDLINE="$(CMDLINE)" BOARD="$(BOARDNAME)" \
+		BOARD="$(BOARDNAME)" \
 		LZMA_TEXT_START=0x80a00000 LOADADDR=0x80060000 \
 		$(1) compile loader.$(LOADER_TYPE)
 	mv "$@.$(LOADER_TYPE)" "$@"
@@ -86,13 +86,17 @@ define Build/loader-common
 endef
 
 define Build/loader-okli-compile
-	$(call Build/loader-common,FLASH_OFFS=$(LOADER_FLASH_OFFS) FLASH_MAX=0)
+	$(call Build/loader-common,FLASH_OFFS=$(LOADER_FLASH_OFFS) FLASH_MAX=0 KERNEL_CMDLINE="$(CMDLINE)")
 endef
 
 define Build/loader-kernel
 	$(call Build/loader-common,LOADER_DATA="$@")
 endef
 
+define Build/loader-kernel-cmdline
+	$(call Build/loader-common,LOADER_DATA="$@" KERNEL_CMDLINE="$(CMDLINE)")
+endef
+
 define Build/loader-okli
 	dd if=$(KDIR)/loader-$(1).gz bs=7680 conv=sync of="$@.new"
 	cat "$@" >> "$@.new"
@@ -278,7 +282,7 @@ $(Device/tplink)
   COMPILE := loader-$(1).gz
   COMPILE/loader-$(1).gz := loader-okli-compile
   KERNEL := copy-file $(KDIR)/vmlinux.bin.lzma | uImage lzma -M 0x4f4b4c49 | loader-okli $(1)
-  KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux-initramfs.bin.lzma | loader-kernel | mktplinkfw-initramfs
+  KERNEL_INITRAMFS := copy-file $(KDIR)/vmlinux-initramfs.bin.lzma | loader-kernel-cmdline | mktplinkfw-initramfs
 endef
 
 define Device/tplink-4m