netfilter: clusterip: make sure arp hooks are available

The clusterip target needs to register an arp mangling hook,
so make sure NF_ARP hooks are available.

Fixes: 2a95183a ("netfilter: don't allocate space for arp/bridge hooks unless needed")
Reported-by: Nkernel test robot <fengguang.wu@intel.com>
Signed-off-by: NFlorian Westphal <fw@strlen.de>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>

net/ipv4/netfilter/Kconfig

@@ -343,6 +343,7 @@ config IP_NF_TARGET_CLUSTERIP
 	depends on NF_CONNTRACK_IPV4
 	depends on NETFILTER_ADVANCED
 	select NF_CONNTRACK_MARK
+	select NETFILTER_FAMILY_ARP
 	help
 	  The CLUSTERIP target allows you to build load-balancing clusters of
 	  network servers without having a dedicated load-balancing