Change to compatible device tree configuration

[guoxiaoqiao]

According to the reference document of the kernel's USB device tree, I made the above modifications. After the modification, the CH347 and its sub-devices can be configured into the device tree file in a similar way to the following method.

https://www.kernel.org/doc/Documentation/devicetree/bindings/usb/usb-device.txt

&usb1 { /* host controller */
    #address-cells = <1>;
    #size-cells = <0>;

    hub@1 {     /* hub connected to port 1 */
        compatible = "usb5e3,608";
        reg = <1>;
    };

    device@2 {  /* device connected to port 2 */
        compatible = "usb123,4567";
        reg = <2>;
    };

    ch347@3 {
        compatible = "usb1a86,55db";
        reg = <3>;

        #address-cells = <2>;
        #size-cells = <0>;

        ch347-usb-if@2 {
            compatible = "usb1a86,55db.config1.2";
            reg = <2 1>;

            ch347-gpio {
                compatible = "wch,ch347-mfd-gpio";
            };

            ch347-i2c {
                compatible = "wch,ch347-mfd-i2c";
            };

            ch347-spi {
                compatible = "wch,ch347-mfd-spi";

                spi-nor@0 {
                                        compatible = "jedec,spi-nor";
                    reg = <0>;
                    spi-max-frequency = <60000000>;
                };
            };
        };
    };
};