Merge "cameraserver: remove assumption that status change callbacks must be...

Merge "cameraserver: remove assumption that status change callbacks must be called from cameraserver process." into rvc-dev am: f00b91b9 am: 0ab3f6cf am: 6881ccee

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11816228

Change-Id: I3d72b4240b0a5ff43dc0c87246259a23fd4a36e1