init adjustments to ensure used topics are advertised early (primarily for logging)

- multi-EKF create each instance as soon as IMU & mag are advertised (before device id populated)

src/modules/airspeed_selector/airspeed_selector_main.cpp

@@ -206,6 +206,8 @@ AirspeedModule::AirspeedModule():
 
 	_perf_elapsed = perf_alloc(PC_ELAPSED, MODULE_NAME": elapsed");
 	_airspeed_validated_pub.advertise();
+	_wind_est_pub[0].advertise();
+	_wind_est_pub[1].advertise();
 }
 
 AirspeedModule::~AirspeedModule()