These were previously duplicated between multiple keyboard_scan.c and
board.c files, and there were a bunch of different constants #defined
to be 13.
BUG=chrome-os-partner:18360
BRANCH=none
TEST=compile all boards; test keyboard on spring and link
Change-Id: I91bf9d56d2a56ff25ff307ff10883ca87b6937e5
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/46165