Cameraserver framework HAL is marked optional am: ac507e91ad

Original change: https://android-review.googlesource.com/c/platform/system/libhidl/+/3117486

Change-Id: I6fa4f0d86c7d8f10049d209d7efa4cec50e57479
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>