staging: comedi: amplc_dio200: pass device to clock/gate config

Rename the clock and gate configuration functions for the '8254' counter
subdevices and pass in the pointers to the comedi device and comedi
subdevice.  This is just preparing the way for later changes.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>