Fix hardcoded filament load speeds

Firmware/Marlin_main.cpp

@@ -4775,11 +4775,11 @@ if(eSoundMode!=e_SOUND_MODE_SILENT)
                         WRITE(BEEPER,LOW);
                         
                         target[E_AXIS]+= FILAMENTCHANGE_FIRSTFEED ;
-                        plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], 20, active_extruder); 
+                        plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], FILAMENTCHANGE_EFEED_FIRST, active_extruder); 
                         
                         
                         target[E_AXIS]+= FILAMENTCHANGE_FINALFEED ;
-                        plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], 2, active_extruder); 
+                        plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], FILAMENTCHANGE_EFEED_FINAL, active_extruder); 
                         
                  
                         
@@ -4795,18 +4795,18 @@ if(eSoundMode!=e_SOUND_MODE_SILENT)
                           
                              case 2:
                                      target[E_AXIS]+= FILAMENTCHANGE_FIRSTFEED ;
-                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], 20, active_extruder); 
+                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], FILAMENTCHANGE_EFEED_FIRST, active_extruder); 
                         
                         
                                      target[E_AXIS]+= FILAMENTCHANGE_FINALFEED ;
-                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], 2, active_extruder); 
+                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], FILAMENTCHANGE_EFEED_FINAL, active_extruder); 
                                       
                                      
                                      lcd_loading_filament();
                                      break;
                              case 3:
                                      target[E_AXIS]+= FILAMENTCHANGE_FINALFEED ;
-                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], 2, active_extruder); 
+                                     plan_buffer_line(target[X_AXIS], target[Y_AXIS], target[Z_AXIS], target[E_AXIS], FILAMENTCHANGE_EFEED_FINAL, active_extruder); 
                                      lcd_loading_color();
                                      break;