ARM: dts: silk: Add r1ex24002 EEPROM to DT

Extend the Silk board support to include U14 which is an I2C based EEPROM
hooked up to the I2C1 bus.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a7794-silk.dts

@@ -226,6 +226,12 @@ adv7511_out: endpoint {
 				};
 			};
 		};
+
+		eeprom@50 {
+			compatible = "renesas,r1ex24002", "atmel,24c02";
+			reg = <0x50>;
+			pagesize = <16>;
+		};
 	};
 };