added defines for max hotend and max bed temperature for xyz calibration

Firmware/Configuration.h

@@ -724,6 +724,7 @@ enum CalibrationStatus
 #include "thermistortables.h"
 
 
-
+#define MAX_HOTEND_TEMP_CALIBRATION 50
+#define MAX_BED_TEMP_CALIBRATION 50
 
 #endif //__CONFIGURATION_H