Update sideband stream when layer has queued a buffer

Layer which is disconnected from the sideband stream
cannot display a queued frame. This CL updates the
sideband when a frame is queued.

Bug: 159511848
Test: m surfaceflinger
Test: run the test from b/159511848
Change-Id: Iec532d63880b218fba5f3ccc7056ca4d283f32c6
1 file changed