rush: Enable dp display

Add dp/sor supporting functions to enable dp panel.

BUG=chrome-os-partner:34336
BRANCH=none
TEST=build rush and ryu

Change-Id: I1cc5a95ef5e3ea7cc701c1cb124a7eb5a5dbd872
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 795a7cddd36bd783cfdd6f1d3f7092bf48ebd8e7
Original-Change-Id: I336336dbbc5a772eec19ba96db8e7b50f6ea1497
Original-Signed-off-by: Jimmy Zhang <jimmzhang@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/238945
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9616
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
7 files changed