IB: Pass only ib_udata in function prototypes

Now when ib_udata is passed to all the driver's object create/destroy APIs
the ib_udata will carry the ib_ucontext for every user command. There is
no need to also pass the ib_ucontext via the functions prototypes.

Make ib_udata the only argument psssed.

Signed-off-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/mlx4/srq.c

@@ -131,8 +131,7 @@ struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd,
 		if (err)
 			goto err_mtt;
 
-		err = mlx4_ib_db_map_user(ucontext, udata, ucmd.db_addr,
-					  &srq->db);
+		err = mlx4_ib_db_map_user(udata, ucmd.db_addr, &srq->db);
 		if (err)
 			goto err_mtt;
 	} else {