[NETLINK]: Mark netlink policies const

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 6f3bb73..9df26a0 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1761,7 +1761,7 @@
 	return NULL;
 }
 
-static struct nla_policy nl_neightbl_policy[NDTA_MAX+1] __read_mostly = {
+static const struct nla_policy nl_neightbl_policy[NDTA_MAX+1] = {
 	[NDTA_NAME]		= { .type = NLA_STRING },
 	[NDTA_THRESH1]		= { .type = NLA_U32 },
 	[NDTA_THRESH2]		= { .type = NLA_U32 },
@@ -1770,7 +1770,7 @@
 	[NDTA_PARMS]		= { .type = NLA_NESTED },
 };
 
-static struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] __read_mostly = {
+static const struct nla_policy nl_ntbl_parm_policy[NDTPA_MAX+1] = {
 	[NDTPA_IFINDEX]			= { .type = NLA_U32 },
 	[NDTPA_QUEUE_LEN]		= { .type = NLA_U32 },
 	[NDTPA_PROXY_QLEN]		= { .type = NLA_U32 },