ARM: kirkwood: Add support DT of second I2C bus

Second I2C bus is supported by 88f6282 and 88f6283.
This creates kirkwood-6282.dtsi, and defines DT table
of second I2C bus.
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: NJason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/kirkwood-6282.dtsi

@@ -31,5 +31,15 @@
 				marvell,function = "uart1";
 			};
 		};
+
+		i2c@11100 {
+			compatible = "marvell,mv64xxx-i2c";
+			reg = <0x11100 0x20>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			interrupts = <32>;
+			clock-frequency = <100000>;
+			status = "disabled";
+		};
 	};
-};
+};
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