arm64: dts: uniphier: add pinctrl property to eMMC node for LD11/LD20

Now everything is ready to enable this pinctrl.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm64/boot/dts/socionext/uniphier-ld11.dtsi

@@ -304,6 +304,8 @@ emmc: sdhc@5a000000 {
 			compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
 			reg = <0x5a000000 0x400>;
 			interrupts = <0 78 4>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_emmc>;
 			clocks = <&sys_clk 4>;
 			bus-width = <8>;
 			mmc-ddr-1_8v;

arch/arm64/boot/dts/socionext/uniphier-ld20.dtsi

@@ -378,6 +378,8 @@ emmc: sdhc@5a000000 {
 			compatible = "socionext,uniphier-sd4hc", "cdns,sd4hc";
 			reg = <0x5a000000 0x400>;
 			interrupts = <0 78 4>;
+			pinctrl-names = "default";
+			pinctrl-0 = <&pinctrl_emmc>;
 			clocks = <&sys_clk 4>;
 			bus-width = <8>;
 			mmc-ddr-1_8v;