Further sync to kernel make_dev(): since we don't provide group access

to /dev/raidctl, don't set the group to operator.  (This isn't a
storage device, it's a control device).

Also, since umask here is already restrictive, we don't need to
explicitly set the mode.

Submitted by:	bde

etc/MAKEDEV

@@ -447,7 +447,7 @@ wt*)
 	;;
 
 raidctl)
-	mknod raidctl c 201 0 root:operator;	chmod 0600 raidctl
+	mknod raidctl c 201 0
 	;;
 
 # Individual slices.