[NETFILTER]: x_tables: mark matches and targets __read_mostly

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_string.c b/net/netfilter/xt_string.c
index ab761b1..8641334 100644
--- a/net/netfilter/xt_string.c
+++ b/net/netfilter/xt_string.c
@@ -73,7 +73,7 @@
 	textsearch_destroy(STRING_TEXT_PRIV(matchinfo)->config);
 }
 
-static struct xt_match xt_string_match[] = {
+static struct xt_match xt_string_match[] __read_mostly = {
 	{
 		.name 		= "string",
 		.family		= AF_INET,