CSRA66X0 audio codec

Required properties:
 - compatible = "qcom,csra66x0"
 - reg: represents the slave base address provided to the peripheral.
 - qcom,csra-vreg-en-gpio: CSRA66X0 codec enable signal.

Optional Properties:
 - qcom,csra-cluster: Indication that CSRA66X0 device is member
			of a multi-device cluster.
 - qcom,csra-cluster-master: Indication that CSRA66X0 device is
			master of multi-device cluster.
 - interrupt-parent: The parent interrupt controller.
 - interrupts: Specifies the interrupt to Apps processor.
 - irq-active-low: Active interrupt level indication.

Example:

	csra66x0_ampl_68: csra66x0@68 {
		compatible = "qcom,csra66x0";
		reg = <0x68>;
		qcom,csra-vreg-en-gpio = <&tlmm 96 0>;

		qcom,csra-cluster = <1>;
		qcom,csra-cluster-master = <1>;

		interrupt-parent = <&tlmm>;
		interrupts = <80 IRQ_TYPE_LEVEL_HIGH>;
		irq-active-low = <0>;
	};