Use the bus number enumerations from funit to make the
pad names and bus numbers consistent and clearer.
BUG=chrome-os-partner:31106
BRANCH=None
TEST=Built and booted to kernel.
Change-Id: I817a56e879ecc96474128d624dc46c12ebc5c7a8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/213492
Reviewed-by: Furquan Shaikh <furquan@chromium.org>