Fix the following warning detected by checkpatch.pl: WARNING: Prefer 'unsigned int' to bare use of 'unsigned' TEST=Build and run on Galileo Gen2 Change-Id: I207713a3370e5a9abed4535187aa2aaeef502d6f Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18848 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>