NFS: Enable nfs4_setup_sequence() for DELEGRETURN

When CONFIG_NFS_V4_1 is disabled, the calls to nfs4_setup_sequence()
and nfs4_sequence_done() are compiled out for the DELEGRETURN
operation.  To allow NFSv4.0 transport blocking to work for
DELEGRETURN, these call sites have to be present all the time.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index e9e58cc..6807e9b 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4918,7 +4918,6 @@
 	kfree(calldata);
 }
 
-#if defined(CONFIG_NFS_V4_1)
 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
 {
 	struct nfs4_delegreturndata *d_data;
@@ -4930,12 +4929,9 @@
 			&d_data->res.seq_res,
 			task);
 }
-#endif /* CONFIG_NFS_V4_1 */
 
 static const struct rpc_call_ops nfs4_delegreturn_ops = {
-#if defined(CONFIG_NFS_V4_1)
 	.rpc_call_prepare = nfs4_delegreturn_prepare,
-#endif /* CONFIG_NFS_V4_1 */
 	.rpc_call_done = nfs4_delegreturn_done,
 	.rpc_release = nfs4_delegreturn_release,
 };