[OpenWrt] Add OpenWrt support to WiFi tests am: 2efeaa89c3 am: 934afa568d

Original change: https://googleplex-android-review.googlesource.com/c/platform/tools/test/connectivity/+/12373373

Change-Id: Ie8ebcc9cba219b61387223e27eb0566316ee0653
tree: dc31dbebebe8762328a4d01bcb8fdaa96f02dc03
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. OWNERS
  6. PREUPLOAD.cfg