fix unnecessary kernel rebuild

SVN-Revision: 3904

openwrt/target/linux/au1000-2.6/Makefile

@@ -17,10 +17,9 @@ $(LINUX_DIR)/.patched: $(LINUX_DIR)/.unpacked
 	@$(CP) config $(LINUX_DIR)/.config
 	touch $@
 
-$(LINUX_BUILD_DIR)/zImage.flash.srec: $(LINUX_DIR)/arch/mips/boot/compressed/images/zImage.flash.srec $(LINUX_DIR)/arch/mips/boot/compressed/images/zImage.srec
-	$(MAKE) -C $(LINUX_DIR) V=1 CROSS_COMPILE=$(TARGET_CROSS) ARCH=$(LINUX_KARCH) PATH=$(TARGET_PATH) zImage.flash
+$(LINUX_BUILD_DIR)/zImage.flash.srec: $(LINUX_DIR)/vmlinux
 	$(CP) $(LINUX_DIR)/arch/mips/boot/compressed/images/zImage.flash.srec $(LINUX_DIR)/zImage.flash.srec
 	$(CP) $(LINUX_DIR)/arch/mips/boot/compressed/images/zImage.srec $(LINUX_DIR)/zImage.srec
 	touch $@
 
-compile: $(LINUX_DIR)/vmlinux
+compile: $(LINUX_BUILD_DIR)/zImage.flash.srec