ARM: mx28evk: Add I2C EEPROM support

mx28evk has a free slot U50 that can be used to populate an I2C EEPROM.

Add support for it.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/boot/dts/imx28-evk.dts

@@ -161,6 +161,12 @@ sgtl5000: codec@0a {
 					VDDIO-supply = <&reg_3p3v>;
 
 				};
+
+				at24@51 {
+					compatible = "at24,24c32";
+					pagesize = <32>;
+					reg = <0x51>;
+				};
 			};
 
 			pwm: pwm@80064000 {