Tracker: fix notify initialisation

notify should be initialised before setting the initial startup flag
status

AntennaTracker/AntennaTracker.pde

@@ -243,12 +243,14 @@ void setup()
     // load the default values of variables listed in var_info[]
     AP_Param::setup_sketch_defaults();
 
+    // initialise notify
+    notify.init(false);
+
     // antenna tracker does not use pre-arm checks or battery failsafe
     AP_Notify::flags.pre_arm_check = true;
     AP_Notify::flags.pre_arm_gps_check = true;
     AP_Notify::flags.failsafe_battery = false;
 
-    notify.init(false);
     init_tracker();
 
     // initialise the main loop scheduler