Needed because ClatdController and clatd binary are moved
into apex. libclat is used for accessing BPF map.
Bug: 212345928
Test: manual test
1. Connect to ipv6-only wifi.
2. Try IPv4 traffic.
$ ping 8.8.8.8
Change-Id: If3fb00e12ef365ccf3ac782c4e6ecbfd01d2dd4c