ARM: dts: imx27-phytec: Use eeprom as the node name

Node names should be generic, so use 'eeprom' to fix the
following schema warnings:

 at24@52: $nodename:0: 'at24@52' does not match '^eeprom@[0-9a-f]{1,2}$'
	from schema $id: http://devicetree.org/schemas/eeprom/at24.yaml#

Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx27-phytec-phycard-s-som.dtsi

@@ -34,7 +34,7 @@
 	pinctrl-0 = <&pinctrl_i2c2>;
 	status = "okay";
 
-	at24@52 {
+	eeprom@52 {
 		compatible = "atmel,24c32";
 		pagesize = <32>;
 		reg = <0x52>;

arch/arm/boot/dts/nxp/imx/imx27-phytec-phycore-som.dtsi

@@ -180,7 +180,7 @@
 	pinctrl-0 = <&pinctrl_i2c2>;
 	status = "okay";
 
-	at24@52 {
+	eeprom@52 {
 		compatible = "atmel,24c32";
 		pagesize = <32>;
 		reg = <0x52>;