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: 820c84c5

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



Change-Id: I343ac9f7e3233463197b75e97521425a434a92e4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>