* Spreadtrum sound audio mcdt driver

This node models spreadtrum sound audio muti channel data trasmit driver

Required properties:

- compatible = "sprd,sharkl5-mcdt", "sprd,roc1-mcdt", "sprd,sharkl5pro-mcdt";
- reg : register addreess and size of mcdt
- interrupts : interrupt number
- sprd,ap-addr-offset : mcdt address mapping offset between ap and audio cp
	used for transform agcp addr from ap addrss of mcdt.

Example:

mcdt@33490000{
	compatible = "sprd,sharkl5-mcdt";
	reg = <0 0x33490000 0 0x170>;
	interrupts = <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;
	sprd,ap-addr-offset = <0x32000000>;
};
