Add visibility to audio vendor apex

Test: launch cuttlefish, CtsMediaAudioTestCases
Bug: 295803971
Change-Id: Ib929cc136465c2461a110ebb149e60f006065bef
diff --git a/media/libeffects/visualizer/Android.bp b/media/libeffects/visualizer/Android.bp
index cf782f7..c9a46f3 100644
--- a/media/libeffects/visualizer/Android.bp
+++ b/media/libeffects/visualizer/Android.bp
@@ -72,6 +72,6 @@
     ],
     relative_install_path: "soundfx",
     visibility: [
-        "//hardware/interfaces/audio/aidl/default",
+        "//hardware/interfaces/audio/aidl/default:__subpackages__",
     ],
 }