Staging: comedi: fix 80 character coding style issue in adl_pci9118.c

Fixes all over 80 character warnings in the adl_pci9118.c file found by the checkpatch.pl tool
Signed-off-by: NMaurice Dawson <mauricedawson2699@googlemail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>