ARM: digicolor: add i2c master controller support

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/cx92755.dtsi

@@ -116,4 +116,15 @@ uart2: uart@f0000780 {
 		interrupts = <46>;
 		status = "disabled";
 	};
+
+	i2c: i2c@f0000120 {
+		compatible = "cnxt,cx92755-i2c";
+		reg = <0xf0000120 0x10>;
+		interrupts = <28>;
+		clocks = <&main_clk>;
+		clock-frequency = <100000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
 };

arch/arm/boot/dts/cx92755_equinox.dts

@@ -72,3 +72,7 @@ chosen {
 &uart0 {
 	status = "okay";
 };
+
+&i2c {
+	status = "okay";
+};