(cherry-pick of commit: e9af4669659c306a9c9b1a1ae3a1313a7631357d)
Bug: 63669128
Test: Tested USB gadget configurations and verified
that they enumerated.
Change-Id: If0f98697488f6c7cfe335d4c292acebaaba6c20f
This CL adds support to notify frameworks when an audio
or debug accessory is attached.
Bug: 36604276
Test: Manually test inserting an Audio accessory.
Change-Id: I9ec0f88ed85ed593b31132ba58bfedb51a435cd8