Merge changes from topic "presubmit-am-3d6bc7b759b74a9f86eef12738149b12"
* changes:
[automerge] USB MIDI: Create encoder per output port 2p: d338c3c8 2p: 962e94ec
[automerge] USB MIDI: Create encoder per output port 2p: d338c3c8
USB MIDI: Create encoder per output port