Staging: comedi: fix brace and 80 character coding style issue in ni_daq_700.c

This is a patch to the ni_daq_700.c file that fixes up brace and 80 character warnings
found by the checkpatch.pl tool

Signed-off-by: Graham M Howe <gman.1352@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>