kconfig: import Kconfig files from Linux 3.16-rc7

Import
  - scripts/kconfig/*
  - include/linux/kconfig.h
from Linux 3.16-rc7.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/scripts/kconfig/check.sh b/scripts/kconfig/check.sh
new file mode 100755
index 0000000..55b79ba
--- /dev/null
+++ b/scripts/kconfig/check.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+# Needed for systems without gettext
+$* -x c -o /dev/null - > /dev/null 2>&1 << EOF
+#include <libintl.h>
+int main()
+{
+	gettext("");
+	return 0;
+}
+EOF
+if [ ! "$?" -eq "0"  ]; then
+	echo -DKBUILD_NO_NLS;
+fi