Merge "Clear ringbuffer after dumping to file" into sc-dev am: 45cb33bf7a am: b49e4f07f7 am: 570c7f8749

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15257244

Change-Id: I679c8b22091ae4dacfe7f69bb4aac1a22fee8096