Merge "C2HIDL: handle unregistered death notification" into main am: 32ab3d6717

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/3288901

Change-Id: I55255cf9c96444535a98e331a7b39dc15798d521
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>