NFSv4.1: Clean up bind_conn_to_session

We don't need to fake up an entire session in order retrieve the arguments.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 1af12fc..4cb3eaa 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1167,8 +1167,15 @@
 	struct nfstime4			date;
 };
 
+struct nfs41_bind_conn_to_session_args {
+	struct nfs_client		*client;
+	struct nfs4_sessionid		sessionid;
+	u32				dir;
+	bool				use_conn_in_rdma_mode;
+};
+
 struct nfs41_bind_conn_to_session_res {
-	struct nfs4_session		*session;
+	struct nfs4_sessionid		sessionid;
 	u32				dir;
 	bool				use_conn_in_rdma_mode;
 };