Merge "sound: dt-bindings: Add USB audio QMI driver bindings"

QTI USB Audio QMI Device

USB Audio QMI device is used to attach to remote processor IOMMU and

map USB Audio driver specific memory to iova to share with remote

processor.

Required Properties:

- compatible : "qcom,usb-audio-qmi-dev"

- iommus : A list of phandle and IOMMU specifier pairs that describe the

  IOMMU master interfaces of the device.

- qcom,usb-audio-stream-id : Stream id is prepended to iova before passing

  iova to remote processor. This allows remote processor to access iova.

- qcom,usb-audio-intr-num : Interrupter number for external sub system

  destination.

Example:

	usb_audio_qmi_dev {

		compatible = "qcom,usb-audio-qmi-dev";

		iommus = <&lpass_q6_smmu 12>;

		qcom,usb-audio-stream-id = <12>;

		qcom,usb-audio-intr-num = <1>;

	};