Texas Instruments TAS2562 Smart PA

Required properties:

 - compatible:		Should contain "ti,tas2562".
 - reg:			The i2c address. Should contain <0x4c>, <0x4d>,
            <0x4e>, or <0x4f>.

Optional properties:

 - ti,left-channel: The i2c address of left device.

 - ti,right-channel: The i2c address of right device. 
            It can be NULL for mono design.


 - ti,channels:	This property is channels number from 1 to 2.
            If given 1, it is mono design.
            If given 2, it is stereo design.

 - ti,reset-gpio:	Reset GPIO number of left device.

 - ti,reset-gpio2:	Reset GPIO number of right device.
            It can be NULL for mono design.

 - irq-gpio:  IRQ GPIO number of left device.

 - irq-gpio2: IRQ GPIO number of right device.
            It can be NULL for mono design.

Examples:

	tas2562:tas2562@4c {
		#sound-dai-cells = <0>;
		compatible = "ti,tas2562";
		reg = <0x4c>;
		ti,left-channel = <0x4c>;
		ti,right-channel = <0x4d>;
		ti,channels = <2>; /* channel number */
		ti,reset-gpio = <&gpio1 17 0>;
		ti,reset-gpio2 = <&gpio1 16 0>;
		ti,irq-gpio = <&gpio1 15 0>;
		ti,irq-gpio2 = <&gpio1 14 0>;
		status = "ok";
	};