farm mode: preheat menu updated

Firmware/Configuration_prusa.h

@@ -462,7 +462,7 @@ const bool Z_MIN_ENDSTOP_INVERTING = false; // set to true to invert the logic o
  *------------------------------------*/
 
 #define FARM_PREHEAT_HOTEND_TEMP 250
-#define FARM_PREHEAT_HPB_TEMP 40
+#define FARM_PREHEAT_HPB_TEMP 60
 #define FARM_PREHEAT_FAN_SPEED 0
 
 #define PLA_PREHEAT_HOTEND_TEMP 215

Firmware/ultralcd.cpp

@@ -1752,10 +1752,10 @@ static void lcd_preheat_menu()
   MENU_ITEM(back, MSG_MAIN, 0);
 
   if (farm_mode) {
-	  MENU_ITEM(function, PSTR("farm    -  " STRINGIFY(FARM_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(FARM_PREHEAT_HPB_TEMP)), lcd_preheat_farm);
-	  MENU_ITEM(function, PSTR("nozzle  -  " STRINGIFY(FARM_PREHEAT_HOTEND_TEMP) "/0"), lcd_preheat_farm_nozzle);
+	  MENU_ITEM(function, PSTR("farm   -  " STRINGIFY(FARM_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(FARM_PREHEAT_HPB_TEMP)), lcd_preheat_farm);
+	  MENU_ITEM(function, PSTR("nozzle -  " STRINGIFY(FARM_PREHEAT_HOTEND_TEMP) "/0"), lcd_preheat_farm_nozzle);
 	  MENU_ITEM(function, MSG_COOLDOWN, lcd_cooldown);
-	  MENU_ITEM(function, PSTR("ABS     -  " STRINGIFY(ABS_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(ABS_PREHEAT_HPB_TEMP)), lcd_preheat_abs);
+	  MENU_ITEM(function, PSTR("ABS    -  " STRINGIFY(ABS_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(ABS_PREHEAT_HPB_TEMP)), lcd_preheat_abs);
   } else {
 	  MENU_ITEM(function, PSTR("PLA  -  " STRINGIFY(PLA_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(PLA_PREHEAT_HPB_TEMP)), lcd_preheat_pla);
 	  MENU_ITEM(function, PSTR("PET  -  " STRINGIFY(PET_PREHEAT_HOTEND_TEMP) "/" STRINGIFY(PET_PREHEAT_HPB_TEMP)), lcd_preheat_pet);