staging: lustre: obdclass: Make structure declerations static const

obd_device_list_sops and obd_device_list_fops are not referenced
outside of linux-module.c, and in the general use case
struct file_operations and struct seq_operations should be a const
object, so make them static and const.

This patch fixes the following sparse warnings:
WARNING: struct seq_operations should normally be const
WARNING: struct file_operations should normally be const

Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/obdclass/linux/linux-module.c

@@ -385,7 +385,7 @@ static int obd_device_list_seq_show(struct seq_file *p, void *v)
 	return 0;
 }
 
-struct seq_operations obd_device_list_sops = {
+static const struct seq_operations obd_device_list_sops = {
 	.start = obd_device_list_seq_start,
 	.stop = obd_device_list_seq_stop,
 	.next = obd_device_list_seq_next,
@@ -406,7 +406,7 @@ static int obd_device_list_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-struct file_operations obd_device_list_fops = {
+static const struct file_operations obd_device_list_fops = {
 	.owner   = THIS_MODULE,
 	.open    = obd_device_list_open,
 	.read    = seq_read,