* Realtek Osd controller

Required properties:
- compatible: Should be "realtek,<soctype>-osd2"
	Examples with soctypes are:
	- "realtek,rts3903-osd2" for RTS3903/RTS3913
	- "realtek,rts3915-osd2" for RTS3915
- reg: Address and length of the register set for the device
- interrupt-parent: Phandle of the parent interrupt controller
- interrupts: Should contain the osd interrupt number
- osd-config: Configuration of osd
- status: Either "ok" or "disabled"

Example:
	rts_osd_enc: rts_osd2@1805c000 {
		compatible = "realtek,rts3903-osd2";
		reg = <0x1805c000 0x00001ffd>;
		interrupt-parent = <&vecintc>;
		interrupts = <BSP_IRQ_VIDEOIN>;
		osd-config = <&osd2cfg>;
		status = "disabled";
	};
