Tegra: T30: Beaver board support.

Beaver is a Tegra30 board that is nearly 100% compatible w/Cardhu.
Add a Beaver build so it can begin to be differentiated, if need be.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>

board/nvidia/dts/tegra30-beaver.dts

@@ -0,0 +1,71 @@
+/dts-v1/;
+
+#include "tegra30.dtsi"
+
+/ {
+	model = "NVIDIA Beaver";
+	compatible = "nvidia,beaver", "nvidia,tegra30";
+
+	aliases {
+		i2c0 = "/i2c@7000d000";
+		i2c1 = "/i2c@7000c000";
+		i2c2 = "/i2c@7000c400";
+		i2c3 = "/i2c@7000c500";
+		i2c4 = "/i2c@7000c700";
+		sdhci0 = "/sdhci@78000600";
+		sdhci1 = "/sdhci@78000000";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x7ff00000>;
+	};
+
+	i2c@7000c000 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c400 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c500 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000c700 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	i2c@7000d000 {
+		status = "okay";
+		clock-frequency = <100000>;
+	};
+
+	spi@7000da00 {
+		status = "okay";
+		spi-max-frequency = <25000000>;
+		spi-flash@1 {
+			compatible = "winbond,w25q32";
+			reg = <1>;
+			spi-max-frequency = <20000000>;
+		};
+	};
+
+	sdhci@78000000 {
+		status = "okay";
+		cd-gpios = <&gpio 69 1>; /* gpio PI5 */
+		wp-gpios = <&gpio 155 0>; /* gpio PT3 */
+		power-gpios = <&gpio 31 0>; /* gpio PD7 */
+		bus-width = <4>;
+	};
+
+	sdhci@78000600 {
+		status = "okay";
+		bus-width = <8>;
+	};
+};