net: constify VFTs

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index 4bf0f19..1f65d1e 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -443,7 +443,7 @@
 	return 0;
 }
 
-static struct seq_operations bpq_seqops = {
+static const struct seq_operations bpq_seqops = {
 	.start = bpq_seq_start,
 	.next = bpq_seq_next,
 	.stop = bpq_seq_stop,