kbuild: create include/config directory in scripts/kconfig/Makefile

The directory include/config is used only for
silentoldconfig, localmodconfig, localyesconfig.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
diff --git a/Makefile b/Makefile
index c126a2f..20c3379 100644
--- a/Makefile
+++ b/Makefile
@@ -533,11 +533,9 @@
 export KBUILD_DEFCONFIG KBUILD_KCONFIG
 
 config: scripts_basic outputmakefile FORCE
-	$(Q)mkdir -p include/config
 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
 
 %config: scripts_basic outputmakefile FORCE
-	$(Q)mkdir -p include/config
 	$(Q)$(MAKE) $(build)=scripts/kconfig $@
 
 else
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 844bc9d..573ff3f 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -33,11 +33,11 @@
 	$< --$@ $(Kconfig)
 
 silentoldconfig: $(obj)/conf
-	$(Q)mkdir -p include/generated
+	$(Q)mkdir -p include/config include/generated
 	$< --$@ $(Kconfig)
 
 localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
-	$(Q)mkdir -p include/generated
+	$(Q)mkdir -p include/config include/generated
 	$(Q)perl $< --$@ $(srctree) $(Kconfig) > .tmp.config
 	$(Q)if [ -f .config ]; then 					\
 			cmp -s .tmp.config .config ||			\