K8200: Example Configuration_adv.h back in sync

Example Configuration_adv.h for K8200 back in sync
* Configuration_adv.h: rebased and added missing changes for 4th
extruder

Marlin/example_configurations/K8200/Configuration_adv.h

 // extruder temperature is above/below EXTRUDER_AUTO_FAN_TEMPERATURE.
 // Multiple extruders can be assigned to the same pin in which case
 // the fan will turn on when any selected extruder is above the threshold.
-#define EXTRUDER_0_AUTO_FAN_PIN   -1
-#define EXTRUDER_1_AUTO_FAN_PIN   -1
-#define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_0_AUTO_FAN_PIN -1
+#define EXTRUDER_1_AUTO_FAN_PIN -1
+#define EXTRUDER_2_AUTO_FAN_PIN -1
+#define EXTRUDER_3_AUTO_FAN_PIN -1
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
   #define THERMISTORHEATER_2 TEMP_SENSOR_2
   #define HEATER_2_USES_THERMISTOR
 #endif
+#if TEMP_SENSOR_3 > 0
+  #define THERMISTORHEATER_3 TEMP_SENSOR_3
+  #define HEATER_3_USES_THERMISTOR
+#endif
 #if TEMP_SENSOR_BED > 0
   #define THERMISTORBED TEMP_SENSOR_BED
   #define BED_USES_THERMISTOR
 #if TEMP_SENSOR_2 == -1
   #define HEATER_2_USES_AD595
 #endif
+#if TEMP_SENSOR_3 == -1
+  #define HEATER_3_USES_AD595
+#endif
 #if TEMP_SENSOR_BED == -1
   #define BED_USES_AD595
 #endif
   #undef HEATER_2_MINTEMP
   #undef HEATER_2_MAXTEMP
 #endif
+#if TEMP_SENSOR_3 == 0
+  #undef HEATER_3_MINTEMP
+  #undef HEATER_3_MAXTEMP
+#endif
 #if TEMP_SENSOR_BED == 0
   #undef BED_MINTEMP
   #undef BED_MAXTEMP