* Analog Devices AD7091R5 Analog to Digital Converter (ADC)

Required properties:
  - compatible: Must be "adi,ad7091r5".
  - reg: I2C address for the device

Optional properties:
  - vref-supply: phandle + specifier to a regulator for the external VREF
	supply. If no external VREF is supplied this attribute should be omitted.
	see: Documentation/devicetree/bindings/regulator/regulator.txt

Example:
adc@0 {
	compatible: "adi,ad7091r5";
	reg = <0x2F>;
};
