kernel-headers: fix build error when run for the second time

SVN-Revision: 14641

toolchain/kernel-headers/Makefile

@@ -13,6 +13,7 @@ STAGING_DIR_HOST:=$(TOOLCHAIN_DIR)
 BUILD_DIR_HOST:=$(BUILD_DIR_TOOLCHAIN)
 
 override QUILT:=
+override HOST_QUILT:=
 override CONFIG_AUTOREBUILD=
 
 include $(INCLUDE_DIR)/kernel.mk