staging/comedi: Fix trailing statements should be on next line in drivers/quatech_daqp_cs.c

fixed below checkpatch errors.
- ERROR: trailing statements should be on next line

Signed-off-by: YAMANE Toshiaki <yamanetoshi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>