NFS: Pass super operations and xattr handlers in the nfs_subversion

I can set all variables in the nfs_fill_super() function, allowing me to
remove the nfs4_fill_super() function.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs.h b/fs/nfs/nfs.h
index ac10b9e..9f502a0 100644
--- a/fs/nfs/nfs.h
+++ b/fs/nfs/nfs.h
@@ -16,6 +16,8 @@
 	struct file_system_type *nfs_fs;	/* NFS filesystem type */
 	const struct rpc_version *rpc_vers;	/* NFS version information */
 	const struct nfs_rpc_ops *rpc_ops;	/* NFS operations */
+	const struct super_operations *sops;	/* NFS Super operations */
+	const struct xattr_handler **xattr;	/* NFS xattr handlers */
 	struct list_head list;		/* List of NFS versions */
 };