[NET]: make seq_operations const

The seq_file operations stuff can be marked constant to
get it out of dirty cache.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index 56b310c..7d57bf7 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -264,7 +264,7 @@
 	return 0;
 }
 
-static struct seq_operations dev_mc_seq_ops = {
+static const struct seq_operations dev_mc_seq_ops = {
 	.start = dev_mc_seq_start,
 	.next  = dev_mc_seq_next,
 	.stop  = dev_mc_seq_stop,