checkpatch: add option for excluding directories

when importing code from external sources, we do not want to fail
on checkpatch and want to run full sanity checks.

Using --exclude <dir> we should be able to exclude a list of well
defined locations in the tree that carry sources from other projects
with other styles.

Change-Id: I7d321e85eed6bc37d5c6879ae88e21d20028a433
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
1 file changed