block/raw: copy BlockLimits on raw_open

Signed-off-by: NPeter Lieven <pl@kamp.de>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>

block/raw_bsd.c

@@ -150,6 +150,7 @@ static int raw_open(BlockDriverState *bs, QDict *options, int flags,
                     Error **errp)
 {
     bs->sg = bs->file->sg;
+    bs->bl = bs->file->bl;
     return 0;
 }