util/lint: Add lint script to run kconfig_lint

The lint target in the makefile relies there being a script using
this particular naming format, so add a shell script front end to
run the kconfig linter.

Change-Id: I029c1cd3bbf3837c9f1d86c391ae5cabfa53685d
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12903
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

util/lint/lint-008-kconfig

@@ -0,0 +1,18 @@
+#!/bin/sh
+# This file is part of the coreboot project.
+#
+# Copyright 2016 Google Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# DESCR: check Kconfig files
+
+LC_ALL=C export LC_ALL
+env perl util/lint/kconfig_lint --no_git_grep --warnings_off