Merge "camera2: ACameraCaptureSession_prepareCallback doc fix." into udc-dev...

Merge "camera2: ACameraCaptureSession_prepareCallback doc fix." into udc-dev am: e44d54d9 am: d51a8a87

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22102304



Change-Id: I4bd65de8966bd2272573f6e5cc22aa740b07701d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>