Add finish() after timeout of Reqeust Arc operations.

If <Request ARC Initiation> and <Request ARC Termination>
receive no <Initiate ARC> and <Termniate ARC> and
it should clean up itself, i.e call finish().

Change-Id: Id10fbe416cf5f5ab836935a1b560864b5cbd3b83

services/core/java/com/android/server/hdmi/RequestArcAction.java

@@ -96,5 +96,6 @@ abstract class RequestArcAction extends FeatureAction {
             return;
         }
         disableArcTransmission();
+        finish();
     }
 }