[NET]: Make all initialized struct seq_operations const.

Make all initialized struct seq_operations in net/ const

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/atm/mpoa_proc.c b/net/atm/mpoa_proc.c
index 4b05cbe..91f3ffc 100644
--- a/net/atm/mpoa_proc.c
+++ b/net/atm/mpoa_proc.c
@@ -177,7 +177,7 @@
 	return 0;
 }
 
-static struct seq_operations mpc_op = {
+static const struct seq_operations mpc_op = {
 	.start =	mpc_start,
 	.next =		mpc_next,
 	.stop =		mpc_stop,