This change introduces feature audio_aaudio on top of the support of
virtio-snd-multiple-backend. The android_audio uses the Android
AAudio NDK library to play audio. A libaaudio_stub is provided for
building and testing on non-android environment.
Bug=b:325930215
Test=Play Youtube video on panther
Test=./tools/dev_container
Test=cargo build
Test=cargo build -F audio_aaudio,libaaudio_stub
Test=./tools/run_tests
Test=./tools/presubmit
Change-Id: I7c275433bf94d4a347720ce0ffa9127ffcb66a1e
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/5556704
Reviewed-by: Jiyong Park <jiyong@google.com>
Reviewed-by: Frederick Mayle <fmayle@google.com>
Auto-Submit: Mu-Le Lee <mulelee@google.com>
Commit-Queue: Mu-Le Lee <mulelee@google.com>
Reviewed-by: Chih-Yang Hsia <paulhsia@chromium.org>
