Merge "Use String8/16 c_str [audio]" into main am: ff0aae4132 am: 74388d64a3 am: 812b6651e5

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2723315

Change-Id: I6f069b706d14c6dd6a253f97f83f569384421af0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>