staging: comedi: comedi_parport: cleanup dev->board_name

Use the 'dev->driver->driver_name' for the 'dev->board_name'. And use
the 'dev->board_name' for the resource name passed to request_region
and request_irq.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>