util/lint: Update license linter, make stable version

- Split the script up to make it easier to update and read.
- Check for multiple different license strings. Not all files are GPL
licensed.
- Don't validate 0 length files
- Update list of files to exclude from the license header check.
- Add command line option to set directories to check

- Add stable version to check a few directories that are fixed.  This
just calls the non-stable version with the directories to check.

Change-Id: I90d4e93a20b4e1638ce4f43f8acbee72dc588625
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12909
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions