Required properties:
- compatible : Compatible list, contains "fsl,vf610-sai",
- "fsl,imx6sx-sai" or "fsl,imx6ul-sai"
+ "fsl,imx6sx-sai", "fsl,imx6ul-sai",
+ "fsl,imx7ulp-sai", "fsl,imx8mq-sai" or
+ "fsl,imx8qm-sai".
- reg : Offset and length of the register set for the device.