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

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

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



Change-Id: Ia61aad9dd247df5f65ec905bacdf4ca95ec1fd40
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>