Staging: comedi: add new drivers to the kernel build

This adds all of the recently added drivers to the build system.
Also splits out the pcmcia drivers so we don't get build errors when we
don't want to.

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