Name
USB_DEVICE — 
     macro used to describe a specific usb device
 
Synopsis
|  USB_DEVICE ( | vend, | 
|  | prod ); | 
 
Arguments
- vend
- 
     the 16 bit USB Vendor ID
     
- prod
- 
     the 16 bit USB Product ID
     
Description
   This macro is used to create a struct usb_device_id that matches a
   specific device.