Tegra: fdt: Add/enhance sdhci (mmc) nodes for all T20 DT files

Linux dts files were used for those boards that didn't already
have sdhci info populated. Tamonten has their own dtsi file with
common sdhci nodes (sourced from Linux).

Signed-off-by: Tom Warren <twarren@nvidia.com>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
diff --git a/board/nvidia/dts/tegra20-ventana.dts b/board/nvidia/dts/tegra20-ventana.dts
index ffc71b2..e1a3d1e 100644
--- a/board/nvidia/dts/tegra20-ventana.dts
+++ b/board/nvidia/dts/tegra20-ventana.dts
@@ -8,6 +8,8 @@
 
 	aliases {
 		usb0 = "/usb@c5008000";
+		sdhci0 = "/sdhci@c8000600";
+		sdhci1 = "/sdhci@c8000400";
 	};
 
 	memory {
@@ -41,4 +43,17 @@
 	usb@c5004000 {
 		status = "disabled";
 	};
+
+	sdhci@c8000400 {
+		status = "okay";
+		cd-gpios = <&gpio 69 1>; /* gpio PI5 */
+		wp-gpios = <&gpio 57 0>; /* gpio PH1 */
+		power-gpios = <&gpio 70 0>; /* gpio PI6 */
+		bus-width = <4>;
+	};
+
+	sdhci@c8000600 {
+		status = "okay";
+		bus-width = <8>;
+	};
 };