libhardware_legacy: Add APIs to support effects with DirectTrack

Change-Id: Iafa7611fc5370cd06212d2c772eba8489483f895
Merge "libhardware_legacy: Add APIs to support effects with DirectTrack"
hardware_legacy: Add USB device enum to audio_devices

Change-Id: I190a2cee1de7b7993d41135f0f5ad75e32ff8c5c
Merge "hardware_legacy: Add USB device enum to audio_devices"
Update copyright to The Linux Foundation

Change-Id: I8eacae1c899a9684fe5324a4b2f86f27f944443d