NFSD: Update the NFSv3 READLINK3res encoder to use struct xdr_stream

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 7db4ee1..1d633c5 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -137,6 +137,7 @@ struct nfsd3_readlinkres {
 	__be32			status;
 	struct svc_fh		fh;
 	__u32			len;
+	struct page		**pages;
 };
 
 struct nfsd3_readres {