Xllinx VPSS Color Space Converter
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The Xilinx VPSS Color Space Converter is a Video IP that supports
color space conversion from RGB to YUV 444/422/420 and vice versa.

Required properties:

- compatible: Must be "xlnx,vpss-csc".

- reg: Physical base address and length of registers set for the device.

- xlnx,video-width: This property qualifies the video format with sample
  width expressed as a number of bits per pixel component. Supported video
  width values are 8/10/12/16.

-reset-gpios: GPIO specifier to assert/de-assert the reset line.

Example:
	csc@a0040000 {
		compatible = "xlnx,vpss-csc";
		reg = <0x0 0xa0040000 0x0 0x10000>;
		reset-gpios = <&gpio 0x0 GPIO_ACTIVE_LOW>;
		xlnx,video-width = <8>;
	}
