NFS: Alias the nfs module to nfs4

This allows distros to remove the line from their modprobe
configuration.
Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

(cherry picked from commit 425e776d)
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

fs/nfs/super.c

@@ -2768,4 +2768,6 @@ MODULE_PARM_DESC(send_implementation_id,
 MODULE_PARM_DESC(nfs4_unique_id, "nfs_client_id4 uniquifier string");
 MODULE_ALIAS("nfs4");
 
+MODULE_ALIAS("nfs4");
+
 #endif /* CONFIG_NFS_V4 */