On early snow boards, WP GPIO is not wired to the EC. Now that we have
properly fixed hardware, we should drop workaround for those boards.
BUG=chrome-os-partner:23762
TEST=Build all boards
BRANCH=None
Change-Id: I5dcfaf5497fc36d6b8d7bc5d8975aa18b2d36a1d
Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/181090
Reviewed-by: Yung-chieh Lo <yjlou@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>