Update makefiles for audio.

This dependency is imported but not used, so it should technically
go in the Android.bp file.

Bug: 71863483
Test: none
Change-Id: I3ee391bdea47182689156b3243b75a3572f7d8bf
diff --git a/audio/2.0/Android.bp b/audio/2.0/Android.bp
index 1643c12..d6e481f 100644
--- a/audio/2.0/Android.bp
+++ b/audio/2.0/Android.bp
@@ -18,6 +18,7 @@
     ],
     interfaces: [
         "android.hardware.audio.common@2.0",
+        "android.hardware.audio.effect@2.0",
         "android.hidl.base@1.0",
     ],
     types: [