AIDLize IAudioPolicyServiceClient

Bug: 160253486
Test: Audio-related tests from CtsMediaTestCases
Change-Id: Id37fad4028b620620a45dabe8af068f3158e6228
diff --git a/services/audiopolicy/service/Android.bp b/services/audiopolicy/service/Android.bp
index e823efa..ceddb7e 100644
--- a/services/audiopolicy/service/Android.bp
+++ b/services/audiopolicy/service/Android.bp
@@ -31,6 +31,7 @@
         "libutils",
         "audioclient-types-aidl-unstable-cpp",
         "audioflinger-aidl-unstable-cpp",
+        "audiopolicy-aidl-unstable-cpp",
         "capture_state_listener-aidl-cpp",
     ],