Binding for Xylon DRM driver

Xylon DRM driver supports the Xylon configurable video controller
logiCVC FPGA IP core device.

Required properties:
 - compatible: value should be "xylon,drm-1.00.a".
 - clocks: the phandle for the pixel clock generator
 - device: the phandle for logiCVC video controller device
 - encoder: the phandle for the video encoder
 - primary-plane: logiCVC layer ID used for DRM driver primary plane

Example:

	xylon_drm {
		compatible = "xylon,drm-1.00.a";
		clocks = <&si570>;
		device = <&logicvc_0>;
		encoder = <&adv7511>;
		primary-plane = <0>;
	};
