Use gbm-format=argb8888 for primary output plane

Primary plane must support alpha for video "overlays" to work.
They're really underlays since they are below the primary plane,
and hence the need to have transparent regions in it.

BUG: 142883165
Change-Id: I5ed98747e0e1d5bae76c889af933e48b1326f0b8
1 file changed
tree: f252803a5c742aaa350e2d46fb337addec73fff4
  1. debian/