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: Idfad0d19f96d59d515b494491ab26fe2e07ef8b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>