Staging: comedi: add nt_mio_cs driver

Hardware driver for NI PCMCIA MIO E series cards
Supports DAQCard-AI-16XE-50 (ni_mio_cs), DAQCard-AI-16E-4,
DAQCard-6062E, DAQCard-6024E, DAQCard-6036E

From: 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>