staging/lustre/obdclass: use static const for seq_operations

lprocfs_stats_seq_sops is only used in static int lprocfs_stats_seq_open
with seq_open as const struct seq_operations *

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Peng Tao <bergwolf@gmail.com>
Cc: devel@driverdev.osuosl.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/obdclass/lprocfs_status.c

@@ -1196,7 +1196,7 @@ static int lprocfs_stats_seq_show(struct seq_file *p, void *v)
 	return (rc < 0) ? rc : 0;
 }
 
-struct seq_operations lprocfs_stats_seq_sops = {
+static const struct seq_operations lprocfs_stats_seq_sops = {
 	.start	= lprocfs_stats_seq_start,
 	.stop	= lprocfs_stats_seq_stop,
 	.next	= lprocfs_stats_seq_next,