Merge "MIDI: Add virtual devices per user" into udc-qpr-dev am: 9e06382720

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24014590

Change-Id: Iff364e5fb7bf2e3e3ec4227a516b56e0b47516f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>