MAX98090 audio CODEC

This device supports I2C only.

Required properties:

- compatible : "maxim,max98090" or "maxim,max98091".

- reg : The I2C address of the device.

- interrupts : The CODEC's interrupt output.

Optional properties:

- clocks: The phandle of the master clock to the CODEC

- clock-names: Should be "mclk"

- #sound-dai-cells : should be 0.

- maxim,dmic-freq: Frequency at which to clock DMIC

- maxim,micbias: Micbias voltage applies to the analog mic, valid voltages value are:
	0 - 2.2v
	1 - 2.55v
	2 - 2.4v
	3 - 2.8v

Pins on the device (for linking into audio routes):

  * MIC1
  * MIC2
  * DMICL
  * DMICR
  * IN1
  * IN2
  * IN3
  * IN4
  * IN5
  * IN6
  * IN12
  * IN34
  * IN56
  * HPL
  * HPR
  * SPKL
  * SPKR
  * RCVL
  * RCVR
  * MICBIAS

Example:

audio-codec@10 {
	compatible = "maxim,max98090";
	reg = <0x10>;
	interrupt-parent = <&gpio>;
	interrupts = <TEGRA_GPIO(H, 4) IRQ_TYPE_LEVEL_HIGH>;
};