block: Add options QDict to .bdrv_open()

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/block/bochs.c b/block/bochs.c
index a6eb33d..d7078c0 100644
--- a/block/bochs.c
+++ b/block/bochs.c
@@ -108,7 +108,7 @@
     return 0;
 }
 
-static int bochs_open(BlockDriverState *bs, int flags)
+static int bochs_open(BlockDriverState *bs, QDict *options, int flags)
 {
     BDRVBochsState *s = bs->opaque;
     int i;