arm64: kvims_defconfig: enable IP_NF_TARGET_TTL and NETFILTER_XT_TARGET_HL

[S-trace]

Those features are necessary to change TTL in IP packets using iptables rules: iptables -t mangle -A POSTROUTING -j TTL --ttl-set 65 iptables -t mangle -A PREROUTING -j TTL --ttl-set 65

This may be used to work around some ISPs with misconfigured network (i.e. TTL always equals 1 for all incoming packets and/or connectivity problems if an ISP receives packets with different TTLs from the same connection) when VIMx is set up as a router/WiFi AP.