usb: dwc2: follow compatible string change for Sophgo CV18XX/SG200X series SoC

usb: dwc2: follow compatible string change for Sophgo CV18XX/SG200X series SoC

As the wildcard name is dropped and favor new compatible string
which match a real SoC, and it is not used for any board at now.

Rename it to sophgo,cv1800b-usb to match the binding change.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Acked-by: Minas Harutyunyan <hminas@synopsys.com>
Link: https://lore.kernel.org/r/20250618031132.373216-3-inochiama@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>