netfilter: nf_flow_table: move ipv4 offload hook code to nf_flow_table

Allows some minor code sharing with the ipv6 hook code and is also
useful as preparation for adding iptables support for offload

Signed-off-by: Felix Fietkau <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index 700c5d51..3103ed1 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -111,7 +111,7 @@
 
 # flow table infrastructure
 obj-$(CONFIG_NF_FLOW_TABLE)	+= nf_flow_table.o
-nf_flow_table-objs := nf_flow_table_core.o
+nf_flow_table-objs := nf_flow_table_core.o nf_flow_table_ip.o
 
 obj-$(CONFIG_NF_FLOW_TABLE_INET) += nf_flow_table_inet.o