service_contexts: add aaudio service

Test: test_aaudio.cpp
Change-Id: I0712f60c898136154d729ceb1103ee021cc6ab82
Signed-off-by: Phil Burk <philburk@google.com>

private/service_contexts

@@ -75,6 +75,7 @@ jobscheduler                              u:object_r:jobscheduler_service:s0
 launcherapps                              u:object_r:launcherapps_service:s0
 location                                  u:object_r:location_service:s0
 lock_settings                             u:object_r:lock_settings_service:s0
+media.aaudio                              u:object_r:audioserver_service:s0
 media.audio_flinger                       u:object_r:audioserver_service:s0
 media.audio_policy                        u:object_r:audioserver_service:s0
 media.camera                              u:object_r:cameraserver_service:s0