Device-Tree bindings for Xilinx Video Timing Controller(VTC)

Xilinx VTC provides the timings for Video IPs.

Required properties:
 - compatible: value should be "xlnx,v-tc-5.01.a"
 - reg: base address and size of the VTC IP
 - interrupts: the interrupt number
 - interrupts-parent: the phandle for interrupt controller

Example:

	v_tc_0: v-tc@40010000 {
		compatible = "xlnx,v-tc-5.01.a";
		interrupt-parent = <&intc>;
		interrupts = <0 54 4>;
		reg = <0x40010000 0x10000>;
	};
