usb-modeswitch needs to get extended for printers

For USB-based mobile broadband modems it got common that the Windows driver is stored on the modem itself and as long as the driver is not installed the modem shows itself to the computer as a USB mass storage device. Therefore usb-modeswitch got introduced to switch these modems into modem modeunder Linux as there the driver is already available as a kernel module shipped with the OS. A similar problem occured now for USB printers, they also show themselves as mass storage devices by default to provide their Windows driver without need of a CD.

So usb-modeswitch needs to be extended to printers Tests should be done whether the switching mechanisms are the same as for modems and only the printer's IDs need to be added or whether more work is needed.