ipset: add ipmark support

Below you'll find a patch to add ipmark module support to ipset.
Changeset 44671 already bumped ipset to version 6.24, but it's still
compiled without ipmark support. This is a requirement for mwan3 v1.6.

Signed-off-by: Jeroen Louwes <jeroen.louwes@gmail.com>

SVN-Revision: 44742

package/network/utils/ipset/Makefile

@@ -45,6 +45,7 @@ IPSET_MODULES:= \
 	ipset/ip_set_bitmap_ipmac \
 	ipset/ip_set_bitmap_port \
 	ipset/ip_set_hash_ip \
+	ipset/ip_set_hash_ipmark \
 	ipset/ip_set_hash_ipport \
 	ipset/ip_set_hash_ipportip \
 	ipset/ip_set_hash_ipportnet \