Merge "AAudio: fix command thread busy loop after disconnection." into udc-dev am: 886cc50d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/21958504



Change-Id: Ia924e1d9b823b8bdac5af6192b35d47ff9278b01
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>