QCOM TCSR (Top Control and Status Register) Driver

The TCSR provides miscellaneous control functions and status registers for
Qualcomm processors.

Required properties:
- compatible: must contain "qcom,tcsr" for IPQ806x
- reg: Address range for TCSR registers

Optional properties:
- qcom,usb-ctrl-select : indicates USB port type selection.  Please reference
  dt-bindings/soc/qcom,tcsr.h for valid USB port selection values.

Example for IPQ8064:

#include <dt-bindings/soc/qcom,tcsr.h>

		tcsr: tcsr@1a400000 {
			compatible = "qcom,tcsr";
			reg = <0x1a400000 0x100>;

			qcom,usb-ctrl-select = <TCSR_USB_SELECT_USB3_DUAL>;
		};