ARM: dts: imx6ull: fix pinctrl node name

pinctrl node name must be either pinctrl or pinmux.
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/nxp/imx/imx6ull.dtsi

@@ -75,7 +75,7 @@ rngb: rng@2284000 {
 				clocks = <&clks IMX6UL_CLK_DUMMY>;
 			};
 
-			iomuxc_snvs: iomuxc-snvs@2290000 {
+			iomuxc_snvs: pinctrl@2290000 {
 				compatible = "fsl,imx6ull-iomuxc-snvs";
 				reg = <0x02290000 0x4000>;
 			};