ARM: dts: rockchip: Support UHS mode for SD card on phyCORE-RK3288 RDK

The phyCORE-RK3288 RDK could enable SD3.0 card but need vdd_io_sd to
support the voltage range from 1.8V to 3.3V.
And we have also to add relevant UHS modes to the sdmmc node.
Let's also turn off the vdd_io_sd regulator in suspend state.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm/boot/dts/rk3288-phycore-rdk.dts

@@ -265,6 +265,10 @@ &sdmmc {
 	disable-wp;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
 	vmmc-supply = <&vdd_sd>;
 	vqmmc-supply = <&vdd_io_sd>;
 	status = "okay";

arch/arm/boot/dts/rk3288-phycore-som.dtsi

@@ -356,11 +356,10 @@ vdd_io_sd: LDO_REG9 {
 				regulator-name = "vdd_io_sd";
 				regulator-always-on;
 				regulator-boot-on;
-				regulator-min-microvolt = <3300000>;
+				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-state-mem {
-					regulator-on-in-suspend;
-					regulator-suspend-microvolt = <3300000>;
+					regulator-off-in-suspend;
 				};
 			};
 		};