toolchain/kernel-headers: restore support for patches, needed for ubicom32

SVN-Revision: 20872

toolchain/kernel-headers/Makefile

@@ -22,6 +22,7 @@ HOST_BUILD_DIR:=$(KERNEL_BUILD_DIR)/linux-$(LINUX_VERSION)
 PKG_MD5SUM:=$(LINUX_KERNEL_MD5SUM)
 LINUX_DIR := $(HOST_BUILD_DIR)
 FILES_DIR := 
+PATCH_DIR := ./patches$(if $(wildcard ./patches-$(KERNEL_PATCHVER)),-$(KERNEL_PATCHVER))
 
 include $(INCLUDE_DIR)/toolchain-build.mk
 include $(INCLUDE_DIR)/kernel-defaults.mk