arm/dt: Add ADT7461 to Seaboard

The ADT7461 is a temperature monitoring IC. One is present on the DVC
I2C bus on Seaboard.
Signed-off-by: NStephen Warren <swarren@nvidia.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

arch/arm/boot/dts/tegra-seaboard.dts

@@ -25,6 +25,11 @@
 
 	i2c@7000d000 {
 		clock-frequency = <400000>;
+
+		adt7461@4c {
+			compatible = "adt7461";
+			reg = <0x4c>;
+		};
 	};
 
 	serial@70006000 {