Add data structures to parse netlink link messages. am: b074b57772 am: de33e16565

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1782511

Change-Id: I58c9f4a77cb8f6d6e2bc01f4909139d0b4474527
tree: 75747c465169393623912f7c6bf6f381441d295a
  1. staticlibs/