Vehicle Hal 2.1: register with the default name

b/35811488

Test: verified Car Service connected to VHAL 2.1
Change-Id: I5d287b2dc71f62bba501ab872f9a14196d5dabb7
diff --git a/automotive/vehicle/2.1/default/service.cpp b/automotive/vehicle/2.1/default/service.cpp
index aaadf17..0844622 100644
--- a/automotive/vehicle/2.1/default/service.cpp
+++ b/automotive/vehicle/2.1/default/service.cpp
@@ -88,7 +88,7 @@
     Vehicle_V2_1 vehicle21(vehicleManager.get());
 
     ALOGI("Registering as service...");
-    vehicle21.registerAsService("Vehicle");
+    vehicle21.registerAsService();
 
     configureRpcThreadpool(1, true /* callerWillJoin */);