ARM: dts: at91: sama5d27_som1_ek: add aliases for i2c

Add aliases for i2c devices to not rely on probe order for i2c device
numbering.
Signed-off-by: NLudovic Desroches <ludovic.desroches@microchip.com>
[claudiu.beznea@microchip.com: remove i2c0, change subject]
Signed-off-by: NClaudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>

arch/arm/boot/dts/at91-sama5d27_som1_ek.dts

@@ -57,6 +57,8 @@
 		serial0 = &uart1;	/* DBGU */
 		serial1 = &uart4;	/* mikro BUS 1 */
 		serial2 = &uart2;	/* mikro BUS 2 */
+		i2c1	= &i2c1;
+		i2c2	= &i2c2;
 	};
 
 	chosen {