staging: comedi: s626.h: Fix checkpatch warning

Fix checkpatch.pl warning for
Comparisons should place the constant on the right side of the test
Remove extra space after /*

Signed-off-by: Anson Jacob <ansonjacob.aj@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>