The register number is always non-negative, so it should be an unsigned
type.
Change-Id: I6b6df5a41fe58efc53eaa87c01b88426ea8daa6e
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45430
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
a79e01bf71