ITE IT6263 LVDS to HDMI bridge bindings

Required properties:
	- compatible: "ite,it6263"
	- reg: i2c address of the bridge
	- video input: this subnode can contain a video input port node
	  to connect the bridge to a LVDS output interface (See this
	  documentation [1]).

Optional properties:
	- split-mode: boolean. if this exists, split mode is enabled,
	  otherwise, single mode is enabled.
	- reset-gpios: OF device-tree gpio specification for SYSRSTN pin.

[1]: Documentation/devicetree/bindings/media/video-interfaces.txt

Example:
	lvds-to-hdmi-bridge@4c {
		compatible = "ite,it6263";
		reg = <0x4c>;

		port {
			it6263_0_in: endpoint {
				clock-lanes = <3>;
				data-lanes = <0 1 2 4 5>;
				remote-endpoint = <&lvds0_out>;
			};
		};
	};