Move definitions used by tethering bpf code into the module. am: 56be03eb28

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/1601855

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9b84ca223c4a950a55cb63642a435e87e158949d
tree: 6f95727273f309b7b82bbed50b595badda8dc0bb
  1. tests/
  2. Tethering/
  3. .gitignore
  4. OWNERS
  5. PREUPLOAD.cfg
  6. TEST_MAPPING