Merge "Use hexadecimal toString for AudioUuid" am: f9628574ec am: 8d9f6f817a am: e89864ef09 am: f0cc94d5e4 am: 6b4d8f5a08

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2593445

Change-Id: I899efe67882ccac83ca1d71742c6c5e74af0bee8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>