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

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

Change-Id: I2a38125a0eb859f8a13c2b7fcb489166c80ceb27