[coreboot-gerrit] Patch merged into coreboot/master: kconfig_lint: update kconfig lint shell scripts

the following patch was just integrated into master:
commit 5a70d6bdf2e70b29740a36061321af59b3005f85
Author: Martin Roth 
Date:   Sun Jan 31 15:17:34 2016 -0700

kconfig_lint: update kconfig lint shell scripts

- Add lint-stable script with just error checking
    - Enable warnings in addition to errors in non-stable test.
    - Use git grep if the code is in a git repo now that exclusions are
    working.
    - Check for perl, and ask the user to install it if it isn't
    available.

Change-Id: Ie60d21f4ef8a61d879f116eb2056eb805b0a55f2
    Signed-off-by: Martin Roth 
    Reviewed-on: https://review.coreboot.org/13542
    Reviewed-by: Stefan Reinauer 
    Tested-by: build bot (Jenkins)

See https://review.coreboot.org/13542 for details.

-gerrit