GPS: Use appropiate GPS_ENGINE settings in APM, ACM and rover

APMrover2/system.pde

@@ -203,7 +203,8 @@ static void init_ardupilot()
 #endif
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS initialisation
+	g_gps->init(GPS::GPS_ENGINE_AUTOMOTIVE);
     g_gps->callback = mavlink_delay;
 
 	//mavlink_system.sysid = MAV_SYSTEM_ID;				// Using g.sysid_this_mav

ArduCopter/system.pde

@@ -218,7 +218,8 @@ static void init_ardupilot()
 
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS Initialization
+	g_gps->init(GPS::GPS_ENGINE_AIRBORNE_1G);
     g_gps->callback = mavlink_delay;
 
 	if(g.compass_enabled)

ArduPlane/system.pde

@@ -180,7 +180,8 @@ static void init_ardupilot()
 
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS Initialization
+	g_gps->init(GPS::GPS_ENGINE_AIRBORNE_4G);
     g_gps->callback = mavlink_delay;
 
 	//mavlink_system.sysid = MAV_SYSTEM_ID;				// Using g.sysid_this_mav