ARM: tegra: colibri_t20: iris: use no-1-8-v

Use no-1-8-v property rather than vmmc/vqmmc supplies and drop now
obsolete and anyway non-existent vcc_sd.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

arch/arm/boot/dts/tegra20-colibri-iris.dts

@@ -101,8 +101,7 @@
 	sdhci@c8000600 {
 		status = "okay";
 		bus-width = <4>;
-		vmmc-supply = <&vcc_sd_reg>;
-		vqmmc-supply = <&vcc_sd_reg>;
+		no-1-8-v;
 	};
 
 	regulators {
@@ -116,15 +115,5 @@
 			regulator-always-on;
 			gpio = <&gpio TEGRA_GPIO(W, 2) GPIO_ACTIVE_HIGH>;
 		};
-
-		vcc_sd_reg: regulator@1 {
-			compatible = "regulator-fixed";
-			reg = <1>;
-			regulator-name = "vcc_sd";
-			regulator-min-microvolt = <3300000>;
-			regulator-max-microvolt = <3300000>;
-			regulator-boot-on;
-			regulator-always-on;
-		};
 	};
 };