* Vuni driver

Required properties:
- compatible:	should be "intel,hgu-vuni"
- reg:	address and length of the register set for the device.

/* Vuni Subif configuration */
- intel,extra-subif: Sub interfaces parameters
	VANI0 -- always at interface 0
	VUNI0_us -- always at interface 3.
- intel,allow_subif_data_loop: Traffic between diff subif
Example:

	 vuni: vuni {
                        compatible = "intel,hgu-vuni";
                        #address-cells = <1>;
                        #size-cells = <0>;
                        reg = <0>;
                        status = "disabled";
                };

	&vuni {
		status = "okay";
		vani@0 {
			intel,extra-subif = "VANI0", "VUNI0_0", "VUNI0_1", "VUNI0_us";
			intel,allow_subif_data_loop; /*Traffic between diff subif */
		};
	};