Staging: comedi: add adv_pci1710 driver

For Advantech cards:
	PCI-1710, PCI-1710HG, PCI-1711, PCI-1713, PCI-1720,

From: Michal Dobes <dobes@tesnet.cz>
Cc: David Schleef <ds@schleef.org>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>