ARM: dts: imx51-zii-rdu1: cleanup eMMC node

On RDU1, sdhc1 is used for eMMC, and that is 3.3V only.

Thus configure device node not to probe it as SD/SDIO and not try 1.8V.

Signed-off-by: Nikita Yushchenko <[e-mail]>
Signed-off-by: Shawn Guo <[e-mail]>

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

···
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_esdhc1>;
 	bus-width = <4>;
+	no-1-8-v;
 	non-removable;
+	no-sdio;
+	no-sd;
 	status = "okay";
 };