USB: visor.h: checkpatch cleanups

Minor whitespace cleanups to make checkpatch happy.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/serial/visor.h

@@ -9,7 +9,8 @@
  *	the Free Software Foundation; either version 2 of the License, or
  *	(at your option) any later version.
  *
- * See Documentation/usb/usb-serial.txt for more information on using this driver
+ * See Documentation/usb/usb-serial.txt for more information on using this
+ * driver.
  *
  */