AP_Airspeed: examples: var_info is now in GCS_MAVLINK_Parameters

libraries/AP_Airspeed/examples/Airspeed/Airspeed.cpp

@@ -86,7 +86,7 @@ void loop(void)
     hal.scheduler->delay(1);
 }
 
-const struct AP_Param::GroupInfo        GCS_MAVLINK::var_info[] = {
+const struct AP_Param::GroupInfo        GCS_MAVLINK_Parameters::var_info[] = {
     AP_GROUPEND
 };
 GCS_Dummy _gcs;