linux: always apply platform patches if available

Get rid of BR2_KERNEL_HEADERS_PATCH_DIR config, and simply always apply
platform patches if available.

target/linux/Makefile.in

@@ -129,7 +129,7 @@ $(LINUX26_DIR)/.patched: $(LINUX26_DIR)/.unpacked $(LINUX_HEADERS_DEPENDS)
 ifeq ($(BR2_KERNEL_HEADERS_RT),y)
 	toolchain/patch-kernel.sh $(LINUX26_DIR) $(DL_DIR) $(LINUX_RT_SOURCE)
 endif
-ifeq ($(BR2_KERNEL_HEADERS_PATCH_DIR),y)
+ifneq ($(KERNEL_HEADERS_PATCH_DIR),)
 	toolchain/patch-kernel.sh $(LINUX26_DIR) $(KERNEL_HEADERS_PATCH_DIR) \
 		linux-$(LINUX26_VERSION)-\*.patch{,.gz,.bz2}
 endif

target/linux/Makefile.in.advanced

@@ -263,11 +263,9 @@ endif
 ifeq ($(BR2_KERNEL_HEADERS_RT),y)
 	toolchain/patch-kernel.sh $(LINUX26_DIR) $(DL_DIR) $(LINUX_RT_SOURCE)
 endif
-ifeq ($(BR2_KERNEL_HEADERS_PATCH_DIR),y)
-	if [ -d $(KERNEL_HEADERS_PATCH_DIR) ] ; then \
+ifneq ($(KERNEL_HEADERS_PATCH_DIR),)
 	toolchain/patch-kernel.sh $(LINUX26_DIR) $(KERNEL_HEADERS_PATCH_DIR) \
-		linux-$(LINUX26_VERSION)\*.patch{,.gz,.bz2} ; \
-	fi
+		linux-$(LINUX26_VERSION)\*.patch{,.gz,.bz2}
 endif
 ifeq ($(BR2_PACKAGE_OPENSWAN),y)
 	toolchain/patch-kernel.sh $(LINUX26_DIR) package/openswan \

toolchain/kernel-headers/Config.in

@@ -54,13 +54,6 @@ config BR2_KERNEL_HEADERS_RT
 	help
 	  Apply Ingo's realtime extensions to linux
 
-config BR2_KERNEL_HEADERS_PATCH_DIR
-	bool "Add additional headers from $(KERNEL_HEADERS_PATCH_DIR)"
-	depends on BR2_KERNEL_HEADERS_2_6_20_4 || BR2_KERNEL_HEADERS_2_6_21_5 || BR2_KERNEL_HEADERS_2_6_22_1  || BR2_KERNEL_HEADERS_2_6_22_10 || BR2_KERNEL_HEADERS_2_6_28
-	help
-	  Apply additional kernel patches defined by KERNEL_HEADERS_PATCH_DIR
-	  in your board directory.
-
 config BR2_DEFAULT_KERNEL_HEADERS
 	string
 	default "2.6.22.10"	if BR2_KERNEL_HEADERS_2_6_22

toolchain/kernel-headers/kernel-headers-new.makefile

@@ -30,9 +30,6 @@ ifeq ("$(DEFAULT_KERNEL_HEADERS)","2.6.26.8")
 LINUX_RT_VERSION:=rt16
 endif
 
-# Need to redefine KERNEL_HEADERS_PATCH_DIR if you want
-# board specific kernel headers
-KERNEL_HEADERS_PATCH_DIR:=toolchain/kernel-headers/empty
 LINUX_HEADERS_DEPENDS:=
 
 ifeq ($(BR2_KERNEL_HEADERS_RT),y)
@@ -56,9 +53,9 @@ $(LINUX_HEADERS_UNPACK_DIR)/.patched: $(LINUX_HEADERS_UNPACK_DIR)/.unpacked $(LI
 ifeq ($(BR2_KERNEL_HEADERS_RT),y)
 	toolchain/patch-kernel.sh $(LINUX_HEADERS_UNPACK_DIR) $(DL_DIR) $(LINUX_RT_SOURCE)
 endif
-ifeq ($(BR2_KERNEL_HEADERS_PATCH_DIR),y)
+ifneq ($(KERNEL_HEADERS_PATCH_DIR),)
 	toolchain/patch-kernel.sh $(LINUX_HEADERS_UNPACK_DIR) $(KERNEL_HEADERS_PATCH_DIR) \
-		\*.patch{,.gz,.bz2}
+		linux-$(LINUX_HEADERS_VERSION)-\*.patch{,.gz,.bz2}
 endif
 ifeq ($(BR2_PACKAGE_OPENSWAN),y)
 	toolchain/patch-kernel.sh $(LINUX_HEADERS_UNPACK_DIR) package/openswan \