Merge "use sp<AudioEffect> instead of unique_ptr<AudioEffect>" am: 2b8b3f8f1e am: 5d1986329e am: c0d6981294

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1622460

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I34e465a652b06c0861c872e43ec4488f10678164