ARM: tegra: colibri_t20: annotate/move sd card detect

Annotate the SD card, its detect pin and move the SD card detect GPIO
definition from the module to the carrier board more in-line with our
other device trees.
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

@@ -163,9 +163,11 @@ usb-phy@c5008000 {
 		vbus-supply = <&reg_usbh_vbus>;
 	};
 
+	/* SD/MMC */
 	sdhci@c8000600 {
 		status = "okay";
 		bus-width = <4>;
+		cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>; /* MMCD */
 		no-1-8-v;
 	};
 

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

@@ -698,10 +698,6 @@ usb-phy@c5004000 {
 		vbus-supply = <&reg_lan_v_bus>;
 	};
 
-	sdhci@c8000600 {
-		cd-gpios = <&gpio TEGRA_GPIO(C, 7) GPIO_ACTIVE_LOW>;
-	};
-
 	clocks {
 		compatible = "simple-bus";
 		#address-cells = <1>;