gpio: rotor: Adding init gpio support

Added gpio driver support for rotor in
depthcharge. FLAG_LIDSW, and FLAG_PWRSW
are both needed to unblock further development
we have included stub implementations until
more information about the hardware is
available.

BUG=None
TEST=emerge-rotor sys-boot/depthcharge
BRANCH=None

Change-Id: I58228c16a66dc362c91c67aea9f837a10c4f2901
Signed-off-by: Calvin Odell <codell@marvell.com>
Reviewed-on: https://chromium-review.googlesource.com/364789
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
6 files changed