staging: lustre: constify lmv_proc_target_fops structure

lmv_proc_target_fops, of type struct file_operations, is never modified, so
declare it as const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/lmv/lmv_internal.h

@@ -164,6 +164,6 @@ struct lmv_tgt_desc
 /* lproc_lmv.c */
 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars);
 
-extern struct file_operations lmv_proc_target_fops;
+extern const struct file_operations lmv_proc_target_fops;
 
 #endif

drivers/staging/lustre/lustre/lmv/lproc_lmv.c

@@ -202,7 +202,7 @@ static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
 	{ NULL }
 };
 
-struct file_operations lmv_proc_target_fops = {
+const struct file_operations lmv_proc_target_fops = {
 	.owner		= THIS_MODULE,
 	.open		 = lmv_target_seq_open,
 	.read		 = seq_read,