staging: comedi: comedidev.h: add PCI_VENDOR_ID_IOTECH
Add a define for the Iotech Inc. PCI vendor id. Remove the duplicates
in the drivers.
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>