ARM: dts: imx6q-prti6q: Fix the SDIO wifi node

Wifi chip description, which causes the following schema warning:

imx6q-prti6q.dtb: mmc@2194000: Unevaluated properties are not allowed ('wifi' was unexpected)

Pass the missing items to fix it.
Signed-off-by: Fabio Estevam <festevam@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6q-prti6q.dts

@@ -359,8 +359,11 @@ &usdhc2 {
 	keep-power-in-suspend;
 	status = "okay";
 
-	wifi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	wifi@2 {
 		compatible = "ti,wl1271";
+		reg = <2>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_wifi>;
 		interrupts-extended = <&gpio1 30 IRQ_TYPE_LEVEL_HIGH>;