LED connected to I2C (CY8C uC controller)

Required properties:
- compatible : should be "nvidia,cy8c_led".

Each LED is represented as a sub-node of the cy8c_led device. Each
node's name represents the name of the corresponding LED.

LED sub-node properties:
- label :  (optional)
	see Documentation/devicetree/bindings/leds/common.txt
- reg : i2c regmap address

Examples:
	i2c@7000c000 {
		nv_foster_led@09 {
			compatible = "nvidia,cy8c_led";
			label = "led_lightbar";
			reg = <0x09>;
			#address-cells = <1>;
			#size-cells = <0>;
	};
};