create a platform config-* file if there is none already when running kernel_menuconfig or kernel_oldconfig

SVN-Revision: 11460

include/kernel-build.mk

@@ -77,6 +77,7 @@ define BuildKernel
 	$(MAKE) -C image compile TARGET_BUILD=
 
   oldconfig menuconfig: $(STAMP_PREPARED) FORCE
+	[ -e "$(LINUX_CONFIG)" ] || touch "$(LINUX_CONFIG)"
 	$(LINUX_CONFCMD) > $(LINUX_DIR)/.config
 	touch $(LINUX_CONFIG)
 	$(MAKE) -C $(LINUX_DIR) $(KERNEL_MAKEOPTS) $$@

include/target.mk

@@ -109,7 +109,7 @@ GENERIC_PATCH_DIR := $(GENERIC_PLATFORM_DIR)/patches$(shell [ -d "$(GENERIC_PLAT
 GENERIC_FILES_DIR := $(GENERIC_PLATFORM_DIR)/files$(shell [ -d "$(GENERIC_PLATFORM_DIR)/files-$(KERNEL_PATCHVER)" ] && printf -- "-$(KERNEL_PATCHVER)" || true )
 
 GENERIC_LINUX_CONFIG?=$(firstword $(wildcard $(GENERIC_PLATFORM_DIR)/config-$(KERNEL_PATCHVER) $(GENERIC_PLATFORM_DIR)/config-default))
-LINUX_CONFIG?=$(firstword $(wildcard $(foreach subdir,$(PLATFORM_DIR) $(PLATFORM_SUBDIR),$(subdir)/config-$(KERNEL_PATCHVER) $(subdir)/config-default)))
+LINUX_CONFIG?=$(firstword $(wildcard $(foreach subdir,$(PLATFORM_DIR) $(PLATFORM_SUBDIR),$(subdir)/config-$(KERNEL_PATCHVER) $(subdir)/config-default)) $(PLATFORM_DIR)/config-$(KERNEL_PATCHVER))
 LINUX_SUBCONFIG?=$(firstword $(wildcard $(PLATFORM_SUBDIR)/config-$(KERNEL_PATCHVER) $(PLATFORM_SUBDIR)/config-default))
 ifeq ($(LINUX_CONFIG),$(LINUX_SUBCONFIG))
   LINUX_SUBCONFIG:=