* MTK IR_IN device tree bindings

Registers a ir_in device as irda input device.

Required properties:
- compatible: should be "mtk-ir"
- reg: ir_in register bank to the physical ir_in device
- interrupts: ir_in irq number.

Example:
	ir_in: ir_in@1c008000{
		compatible = "mtk-ir";
		reg = <0x0 0x1c008000 0 0x80>;
		interrupt-parent = <&mtk_intc2_fiq_high>;
		interrupts = <0x0 0x15 0x4>;
	};

