RT5663 audio CODEC

This device supports I2C only.

Required properties:

- compatible : "realtek,rt5663".

- reg : The I2C address of the device.

- interrupts : The CODEC's interrupt output.

Optional properties:

- "realtek,dc_offset_l_manual"
- "realtek,dc_offset_r_manual"
- "realtek,dc_offset_l_manual_mic"
- "realtek,dc_offset_r_manual_mic"
  Based on the different PCB layout, add the manual offset value to
  compensate the DC offset for each L and R channel, and they are different
  between headphone and headset.

Pins on the device (for linking into audio routes) for RT5663:

  * IN1P
  * IN1N
  * IN2P
  * IN2N
  * HPOL
  * HPOR

Example:

codec: rt5663@12 {
	compatible = "realtek,rt5663";
	reg = <0x12>;
	interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
};