AudioFlinger: Send down HW_AV_SYNC only if track has the flag

Test: vendor, see bug
Bug: 194861106
Change-Id: I822b7cb8a72e3ed8b5a61ccdc57c9bb8fbc8d4ab
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 4ac46b7..b8782d7 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -976,8 +976,9 @@
                 }
             }
         }
-
-        setAudioHwSyncForSession_l(thread, sessionId);
+        if ((output.flags & AUDIO_OUTPUT_FLAG_HW_AV_SYNC) == AUDIO_OUTPUT_FLAG_HW_AV_SYNC) {
+            setAudioHwSyncForSession_l(thread, sessionId);
+        }
     }
 
     if (lStatus != NO_ERROR) {