* Qualcomm Technologies, Inc IPQ8074 ASoC MBOX driver

This node models the Qualcomm Technologies, Inc IPQ8074 ASoC mbox driver

Required properties:

- compatible	 : "qca,ipq8074-mbox"
- dma-index	 : should have the mbox dma index
- reg		 : should have the stereo register address, length
- interrupts	 : should have the mbox interrupt no
- tx-channel	 : should have the mbox tx id
- rx-channel	 : should have the mbox rx id

Example:
mbox0: mbox@7708000 {
	compatible = "qca,ipq8074-mbox";
	dma-index = <0>;
	reg = <0x7708000 0x1000>;
	interrupts = <0 24 0>;
	tx-channel = <MBOX0_TX_ID>;
	rx-channel = <MBOX0_RX_ID>;
	status = "disabled";
};