Merge "Add an icmpv6Checksum utility to IpUtils" am: 67c35de1e8 am: b210f4ceab am: 27e2621cc7

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1448335

Change-Id: Ia9886f8f96ad31a9171aeb68f5e5b6e14f7f8189
tree: 6a3067b4b549ffe8e49f93d7f7018a768f0ffdda
  1. staticlibs/