Merge "EnvironmentalReverb: Add AIDL placeholder implementation and its unit test" am: 11dcbb943d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2366831

Change-Id: I615fe564b0e166884447c75fe8f61165acbe0d5b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>