Merge "cameraserver: Fix convertToHidl for requestStreamBuffers return." into tm-dev am: f318881c19

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/17385331

Change-Id: I8b2d97f5aff50fb53d5576a47764aa6e7f723c9d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>