ARM: mvebu: armada-xp: Add I2C eeprom on Lenovo ix4-300d

There is an I2C eeprom connected on Lenovo ix4-300d, add the
corresponding node.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-By: Benoit Masson <yahoo@perenite.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-xp-lenovo-ix4-300d.dts

@@ -98,6 +98,11 @@ adt7473@2e {
 					reg = <0x2e>;
 				};
 
+				eeprom@50 {
+					compatible = "atmel,24c64";
+					reg = <0x50>;
+				};
+
 				pcf8563@51 {
 					compatible = "nxp,pcf8563";
 					reg = <0x51>;