Merge "Make graphics.allocator HIDL service optional" into tm-dev am: 77e15d0ef6 am: 9f30b6f7e6

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/17726257

Change-Id: I403ab847d8c4d3dbee6d6e4d4fa26774862ccecb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>