Staging: comedi: fix macro coding style issue in adl_pci9111.c

This is a patch that fixes up, macros with multiple statements should be enclosed in a do - while loop, coding style issue in the adl_pci9111.c file found by the checkpatch.pl tool

Signed-off-by: Maurice Dawson <mauricedawson2699@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>