[automerger skipped] Audio: add system usage to audio policy engine schemas am: d2ab30cbe9 am: 2c17a95ff2 am: 8f6b57b5a8 -s ours am: 3ba59d7708 -s ours

am skip reason: Merged-In I49a8d3cfeb45eddc95ad6ab4a33b0adf0585cde2 with SHA-1 e284266e52 is already in history

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2719503

Change-Id: I73fbc1ba1cc0383096d688e20447b1cf1b76f11e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>