ARM: dts: am57xx: cl-som-am57x: add EEPROM support

On-board EEPROM chip is used for storing a board production
info.

Add module EEPROM support (over I2C4 bus).
Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am57xx-cl-som-am57x.dts

@@ -261,6 +261,12 @@ rtc0: rtc@56 {
 		compatible = "emmicro,em3027";
 		reg = <0x56>;
 	};
+
+	eeprom_module: atmel@50 {
+		compatible = "atmel,24c08";
+		reg = <0x50>;
+		pagesize = <16>;
+	};
 };
 
 &cpu0 {