Override app requested orientation when docked.

Applies to docks, lid switch, HDMI and rotation lock.
We always choose a mode that is compatible with the application's
request, so if in a landscape dock, we might override a request
for seascape but we leave requests for portrait alone.

Bug: 5620454
Change-Id: Ib0c4f60f7f9e3aeafaba9c717233a950fccb8af2