audio policy: optimize preferred device selection am: 72af8011

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22242942



Change-Id: I6fca1f10a7f6f70e858a87432e41e9fe19b83e80
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>