Add the "virtual" instance for face HAL retroactively am: f426201991

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2751164

Change-Id: I0b9ddad3b8c1e53c947d6f2fbd9add87879b66a8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>