* Rockchip Rk3228 internal codec

Required properties:

- compatible: "rockchip,rk3228-codec"
- reg: physical base address of the controller and length of memory mapped
  region.
- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
- clock-names: a list of clock names, one for each entry in clocks.
- spk-en-gpio: speaker enable gpio.
- spk-depop-time-ms: speaker depop time msec.

Example for rk3228 internal codec:

codec: codec@12010000 {
	compatible = "rockchip,rk3228-codec";
	reg = <0x12010000 0x1000>;
	clocks =  <&cru SCLK_I2S_OUT>, <&cru PCLK_ACODECPHY>, <&cru SCLK_I2S1>;
	clock-names = "mclk", "pclk", "sclk";
	spk-en-gpio = <&gpio1 RK_PA3 GPIO_ACTIVE_HIGH>;
	status = "disabled";
};