Tracker: use pitch-min and pitch-max in place of constants

AntennaTracker/control_auto.cpp

@@ -16,7 +16,7 @@ void Tracker::update_auto(void)
     }
 
     float yaw = wrap_180_cd((nav_status.bearing+g.yaw_trim)*100); // target yaw in centidegrees
-    float pitch = constrain_float(nav_status.pitch+g.pitch_trim, -90, 90) * 100; // target pitch in centidegrees
+    float pitch = constrain_float(nav_status.pitch+g.pitch_trim, g.pitch_min, g.pitch_max) * 100; // target pitch in centidegrees
 
     bool direction_reversed = get_ef_yaw_direction();
 

AntennaTracker/control_scan.cpp

@@ -25,13 +25,13 @@ void Tracker::update_scan(void)
     if (!nav_status.manual_control_pitch) {
         float pitch_delta = g.scan_speed_pitch * 0.02f;
         nav_status.pitch += pitch_delta * (nav_status.scan_reverse_pitch?-1:1);
-        if (nav_status.pitch < -90 && nav_status.scan_reverse_pitch) {
+        if (nav_status.pitch < g.pitch_min && nav_status.scan_reverse_pitch) {
             nav_status.scan_reverse_pitch = false;
         }
-        if (nav_status.pitch > 90 && !nav_status.scan_reverse_pitch) {
+        if (nav_status.pitch > g.pitch_max && !nav_status.scan_reverse_pitch) {
             nav_status.scan_reverse_pitch = true;
         }
-        nav_status.pitch = constrain_float(nav_status.pitch, -90, 90);
+        nav_status.pitch = constrain_float(nav_status.pitch, -g.pitch_min, g.pitch_max);
     }
 
     update_auto();