NVIDIA Tegra audio complex for TrimSlice

Required properties:
- compatible : "nvidia,tegra-audio-trimslice"
- nvidia,i2s-controller : The phandle of the Tegra I2S1 controller
- nvidia,audio-codec : The phandle of the WM8903 audio codec

Example:

sound {
	compatible = "nvidia,tegra-audio-trimslice";
	nvidia,i2s-controller = <&tegra_i2s1>;
	nvidia,audio-codec = <&codec>;
};