audio: add device definitions for BLE Audio

Add device type enums for BLE Audio.
Device types for BLE audio headset and BLE audio speaker are added
to AudioDeviceInfo class.
Conversions to internal device types are added to AudioSystem.

Bug: 161358428
Test: make flash and boot
Change-Id: I0a39ffc49c0e7e5b36975656a33a2dd2946b60b7
Merged-In: I0a39ffc49c0e7e5b36975656a33a2dd2946b60b7
(cherry picked from commit 6239d7ee)