staging: comedi: pcl730: add support for Diamond Systems IR104-PBF module

The Diamond Systems IR104-PBF board is a PC/104 module with 20
optoisolated inputs and 20 relay outputs.

This board can be supported by the pcl730 driver.

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