Realtek internal audio CODEC

Required properties:
- compatible: Should be "realtek,<soctype>-acodec"
	Examples with soctypes are:
	- "realtek,rts3903-acodec" for RTS3903/RTS3904/RTS3913/RTS3914
	- "realtek,rts3915-acodec" for RTS3915/RTS3916
- reg: physical base address of the device and length of memory mapped
region
- resets: List of phandle and reset specifier pairs, one pair for
each reset signal that affects the device
- reset-names: List of reset signal name strings sorted in the same order as
the resets property

Example:

	audio_codec: audio_codec@18500070 {
		compatible = "realtek,rts3903-acodec";
		reg = <0x18500070 0x64 0x18500100 0x18>;
		resets = <&reset FORCE_RESET_CODEC>;
		reset-names = "reset-codec";
		status = "disabled";
	};
