DDF - really ignore DDF metadata on partitions.

See commit 357ac10678
which made a similar change for super-intel, and really should have
fixed DDF at the same time.

Signed-off-by: NeilBrown <neilb@suse.de>

super-ddf.c

@@ -1126,7 +1126,7 @@ static int load_super_ddf(struct supertype *st, int fd,
 	if (get_dev_size(fd, devname, &dsize) == 0)
 		return 1;
 
-	if (!st->ignore_hw_compat && test_partition(fd))
+	if (test_partition(fd))
 		/* DDF is not allowed on partitions */
 		return 1;