ARM: dts: imx51-zii-rdu1: Populate RAVE SP EEPROM nodes

ZII's RDU1s come with up to 3 EEPROMs attached to RAVE SP. Add
corresponding nodes to make them availible.

Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: cphealy@gmail.com
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx51-zii-rdu1.dts

@@ -589,6 +589,8 @@ &uart3 {
 	rave-sp {
 		compatible = "zii,rave-sp-rdu1";
 		current-speed = <38400>;
+		#address-cells = <1>;
+		#size-cells = <1>;
 
 		watchdog {
 			compatible = "zii,rave-sp-watchdog";
@@ -601,6 +603,33 @@ backlight {
 		pwrbutton {
 			compatible = "zii,rave-sp-pwrbutton";
 		};
+
+		eeprom@a3 {
+			compatible = "zii,rave-sp-eeprom";
+			reg = <0xa3 0x2000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			zii,eeprom-name = "dds-eeprom";
+		};
+
+		eeprom@a4 {
+			compatible = "zii,rave-sp-eeprom";
+			reg = <0xa4 0x4000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			zii,eeprom-name = "main-eeprom";
+		};
+
+		eeprom@ae {
+			compatible = "zii,rave-sp-eeprom";
+			reg = <0xae 0x200>;
+			zii,eeprom-name = "switch-eeprom";
+			/*
+			 * Not all RDU1s have this functionality, so we
+			 * rely on the bootloader to enable this
+			 */
+			status = "disabled";
+		};
 	};
 };