Add new flag for ring-my-car feature.

Flag: com.android.media.audio.ring_my_car
Test: trivial
Bug: 319515324
Change-Id: I57d520b7199d3aa6ac633b6ce9ed86e1850d86f9
diff --git a/media/audio/aconfig/audio.aconfig b/media/audio/aconfig/audio.aconfig
index c3ae59c..9221c04 100644
--- a/media/audio/aconfig/audio.aconfig
+++ b/media/audio/aconfig/audio.aconfig
@@ -83,6 +83,14 @@
 }
 
 flag {
+    name: "ring_my_car"
+    namespace: "media_audio"
+    description:
+        "Incoming ringtones will not be muted based on ringer mode when connected to a car"
+    bug: "319515324"
+}
+
+flag {
     name: "ringer_mode_affects_alarm"
     namespace: "media_audio"
     description: