composer: send invalid fences to SetLayerBuffer

The fence is null if the client composition result is used in SurfaceFlinger.
To align the behavior of sm8150, the null check (acquire_fence == nullptr)
should be removed so that the invalid fence could be sent to SetLayerBuffer
and avoid flicker issues.

Bug: 151790937
Test: no error logs and flickers
Change-Id: Ide131652729b09599b0537b7a6a073ec141cf29f
1 file changed