Freescale i.MX audio complex with mqs codec

Required properties:
- compatible : "fsl,imx-audio-mqs"
- model : The user-visible name of this sound complex
- cpu-dai : The phandle of the i.MX sai controller
- audio-codec : The phandle of the mqs audio codec

Example:

sound-mqs {
	compatible = "fsl,imx6sx-sdb-mqs",
			"fsl,imx-audio-mqs";
	model = "mqs-audio";
	cpu-dai = <&sai1>;
	audio-codec = <&mqs>;
};