ActiveDisplay: Force FULLSCREEN flag

* ActiveDisplay (AD) isn't as appealing when transparent navbar shows.
  Force FULLSCREEN and hide all decorations

Change-Id: Ib8e2bfffcf7cdb9f1dffe084cad7ee70e7722a50
Signed-off-by: Brandon McAnsh <brandon.mcansh@gmail.com>
Merge branch 'revolt2' of https://github.com/ReVolt-ROM/frameworks_base into revolt2