Oak: Add initial support for rowan

BUG=chrome-os-partner:62672
BRANCH=none
TEST=boot to kernel on rowan-rev0

Change-Id: I63522fbc547939688efeb249b8e672dec08438f9
Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/430555
Reviewed-by: Julius Werner <jwerner@chromium.org>
3 files changed