rockchip — cdndp sound dts配置
1、属性值设置：
- compatible: 取名为"rockchip,cdndp-sound" - rockchip,cpu: 设置与codec连接的I2S通道； - rockchip,codec: 指向DP encoder节点；
2、实例：
Example:
sound {
compatible = "rockchip,cdndp-sound";
rockchip,cpu = <&i2s2>;
rockchip,codec = <&cdn_dp>;
};