Merge "codec2 vndk: clean up block pool cache when it's released" into...

Merge "codec2 vndk: clean up block pool cache when it's released" into sc-qpr1-dev am: 549c8132 am: 22222841

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/15788847

Change-Id: I395de3edf3ab942cbf17843e3e311a7a5f9ad50d