Merge \\\\"gfx: support external display\\\\" into cw-e-dev am: e3e49cc873 am: 56b8c3132c am: 59b023a4d9
am: ae5896850b

Change-Id: If6447500d7cabfdd970e803155afb0ae44eb6873
tree: f838cfeacf6127193d9589844f651f69fc7f1a30
  1. merrifield/
  2. moorefield_hdmi/