Fix the following warning detected by checkpatch.pl:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
TEST=Build for cyan
Change-Id: Ib5c6a1bf5308a8add42d7371854b80ea53d7ae84
Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com>
Reviewed-on: https://review.coreboot.org/18870
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Tested-by: build bot (Jenkins)