[NETFILTER]: nf_log: constify struct nf_logger and nf_log_packet loginfo arg

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index 959a0cb..02e6357 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -726,7 +726,7 @@
 	return -ENOTSUPP;
 }
 
-static struct nf_logger nfulnl_logger = {
+static const struct nf_logger nfulnl_logger = {
 	.name	= "nfnetlink_log",
 	.logfn	= &nfulnl_log_packet,
 	.me	= THIS_MODULE,