staging: comedi: ni_mio_common: move disabled GPCT functions

I have not determined if the code in these functions is actually
usable. For now just move the disabled code closer to the working
gpct functions.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>