staging: comedi: ni_mio_common: fix logical continuations

Fix the checkpatch.pl issues:
CHECK: Logical continuations should be on the previous line

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>