Merge "EnvironmentalReverb: Add AIDL placeholder implementation and its unit test" am: 11dcbb943d am: 950fba8a17 am: db6f3ca530

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

Change-Id: I2220b8e350710a10baf0c48438df1e2177923f7f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>