USB: serial: io_ti.c: use module_usb_serial_driver

This converts the io_ti.c driver to use the module_usb_serial_driver() call
instead of having to have a module_init/module_exit function, saving a lot
of duplicated code.

CC: Johan Hovold <jhovold@gmail.com>
CC: Lucas De Marchi <lucas.demarchi@profusion.mobi>
CC: "Eric W. Biederman" <ebiederm@xmission.com>
CC: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/serial/io_ti.c

@@ -2783,27 +2783,8 @@ static struct usb_serial_driver * const serial_drivers[] = {
 	&edgeport_1port_device, &edgeport_2port_device, NULL
 };
 
+module_usb_serial_driver(io_driver, serial_drivers);
 
-static int __init edgeport_init(void)
-{
-	int retval;
-
-	retval = usb_serial_register_drivers(&io_driver, serial_drivers);
-	if (retval == 0)
-		printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
-			       DRIVER_DESC "\n");
-	return retval;
-}
-
-static void __exit edgeport_exit(void)
-{
-	usb_serial_deregister_drivers(&io_driver, serial_drivers);
-}
-
-module_init(edgeport_init);
-module_exit(edgeport_exit);
-
-/* Module information */
 MODULE_AUTHOR(DRIVER_AUTHOR);
 MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_LICENSE("GPL");