staging: comedi: cb_das13_cs: change driver registration order

As done with the other comedi driver types, register the
comedi_driver first then the pcmcia_driver. Also, make
sure the pcmcia_driver registration succeeds and unregister
the comedi_driver it it fails.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>