The nf_dup_ipv4.ko and nf_dup_ipv6.ko kernel module were packaged by
kmod-ipt-tee and kmod-nft-dup-inet at the same time. Extract them into a
separate package used by both.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Link: https://github.com/openwrt/openwrt/pull/15833
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>