IB/mthca: Add device-specific support for resizing CQs

Add low-level driver support for resizing CQs (both kernel and
userspace) to mthca.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/mthca/mthca_user.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
- * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ * Copyright (c) 2005, 2006 Cisco Systems.  All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -75,6 +75,11 @@ struct mthca_create_cq_resp {
 	__u32 reserved;
 };
 
+struct mthca_resize_cq {
+	__u32 lkey;
+	__u32 reserved;
+};
+
 struct mthca_create_srq {
 	__u32 lkey;
 	__u32 db_index;