Texas Instruments PCM1681 8-channel PWM Processor

Required properties:

 - compatible:		Should contain "ti,pcm1681".
 - reg:			The i2c address. Should contain <0x4c>.

Examples:

	i2c_bus {
		pcm1681@4c {
			compatible = "ti,pcm1681";
			reg = <0x4c>;
		};
	};
