Merge "Spatializer: enforce only one client registered" into tm-qpr-dev am: 40b989aa

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/19744347



Change-Id: I49988db59a0b4a5ed343a86a6d6b846dabb09034
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>