bpf_progs/clatd - do not tx offload ipv4/udp packets with 0 checksum am: 59b62e64ce am: b614508cbb

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/netd/+/12161669

Change-Id: If70e473df040364863d776cf30883c32f1c2cebd