Fixed compiler warning for Sanguino compile

Marlin/Sanguino/cores/arduino/pins_arduino.c

 const uint8_t PROGMEM port_to_mode_PGM[] =
 {
 	NOT_A_PORT,
-	(uint8_t) &DDRA,
-	(uint8_t) &DDRB,
-	(uint8_t) &DDRC,
-	(uint8_t) &DDRD,
+	(uint8_t) (uint16_t) &DDRA,
+	(uint8_t) (uint16_t) &DDRB,
+	(uint8_t) (uint16_t) &DDRC,
+	(uint8_t) (uint16_t) &DDRD,
 };
 
 const uint8_t PROGMEM port_to_output_PGM[] =
 {
 	NOT_A_PORT,
-	(uint8_t) &PORTA,
-	(uint8_t) &PORTB,
-	(uint8_t) &PORTC,
-	(uint8_t) &PORTD,
+	(uint8_t) (uint16_t) &PORTA,
+	(uint8_t) (uint16_t) &PORTB,
+	(uint8_t) (uint16_t) &PORTC,
+	(uint8_t) (uint16_t) &PORTD,
 };
 
 const uint8_t PROGMEM port_to_input_PGM[] =
 {
 	NOT_A_PORT,
-	(uint8_t) &PINA,
-	(uint8_t) &PINB,
-	(uint8_t) &PINC,
-	(uint8_t) &PIND,
+	(uint8_t) (uint16_t) &PINA,
+	(uint8_t) (uint16_t) &PINB,
+	(uint8_t) (uint16_t) &PINC,
+	(uint8_t) (uint16_t) &PIND,
 };
 
 const uint8_t PROGMEM digital_pin_to_port_PGM[] =

Marlin/Sanguino/cores/arduino/pins_arduino.h

 #define digitalPinToBitMask(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM + (P) ) )
 #define digitalPinToTimer(P) ( pgm_read_byte( digital_pin_to_timer_PGM + (P) ) )
 #define analogInPinToBit(P) (P)
-#define portOutputRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_output_PGM + (P))) )
-#define portInputRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_input_PGM + (P))) )
-#define portModeRegister(P) ( (volatile uint8_t *)( pgm_read_byte( port_to_mode_PGM + (P))) )
+#define portOutputRegister(P) ( (volatile uint8_t *)( (uint16_t) pgm_read_byte( port_to_output_PGM + (P))) )
+#define portInputRegister(P) ( (volatile uint8_t *)( (uint16_t) pgm_read_byte( port_to_input_PGM + (P))) )
+#define portModeRegister(P) ( (volatile uint8_t *)( (uint16_t) pgm_read_byte( port_to_mode_PGM + (P))) )
 
 #endif

Marlin/Sanguino/cores/arduino/wiring_private.h

 #include <math.h>
 #include <avr/io.h>
 #include <avr/interrupt.h>
-#include <avr/delay.h>
+#include <util/delay.h>
 #include <stdio.h>
 #include <stdarg.h>
 

Marlin/pins.h

 *
 ****************************************************************************************/
 #if MOTHERBOARD == 62
+#undef MOTHERBOARD
 #define MOTHERBOARD 6
 #define SANGUINOLOLU_V_1_2 
 #endif