[automerger skipped] audio: Refactor Mmap buffer creation and handling am:...

[automerger skipped] audio: Refactor Mmap buffer creation and handling am: b0a3695b am: 245d3be0 -s ours

am skip reason: Merged-In I8ba775360643666aa7242c673dfc10c0c817994d with SHA-1 78ad482f is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3550139



Change-Id: I0305f204ecf6cb18ec4d47887395bdc7441a72d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>