Refactor the GPIO functions to use GPIO numbers. This is more consistent
with other GPIO code in coreboot.
BUG=b:66462235
BRANCH=none
TEST=Build and boot Kahlee
Change-Id: I6d6af7f6a0ed9ba1230342e1ca024535c4f34d47
Signed-off-by: Marc Jones <marcj303@gmail.com>
Reviewed-on: https://review.coreboot.org/21684
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>