audio: Add some utility methods, improve logging am: d5536d9ac6 am: 1c812122aa

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2515523

Change-Id: I75b12b27db6fbf8e040ab3722d4b8f9feb2f0876
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>