Merge "AudioDeviceInventory: add cache for preferred device roles" into...

Merge "AudioDeviceInventory: add cache for preferred device roles" into udc-dev am: 6a9342d7 am: 17d9e5a7 am: a56a3a09

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22887816



Change-Id: If8c076922cf77ca2798ff8d65ab25b25f7a7a688
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>