Revert "staging: comedi: drivers: use comedi_dio_insn_config() for complex cases"

This reverts commit f21c5394.

I applied the wrong patch :(

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