sdm: HWDevice: Set correct HWDisplayMode

- Set the correct display modes when the port is read.
- Fix the issue where the DTV panel was having mode
  as default instead of video
- Set ASYNC_LAYER flag on cursor when the panel mode
  is not command

Change-Id: Id7b0f35bdeb031c6f14feb24e37aefb4ec20d9e5
Crs-fixed: 938917
2 files changed