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

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

Change-Id: Ib5ce0fbf40226a8813348763896f634e56b54e15
tree: 75747c465169393623912f7c6bf6f381441d295a
  1. staticlibs/