[automerger skipped] Provide a stub ethernet service to build in sc-mainline-prod. am: 1050a077ba am: c6a18ada91 am: 8e72b19f43 -s ours

am skip reason: Merged-In I6a4a0dc68233d4229d1cae4e5b196e287ef2ed5b with SHA-1 47b89e9594 is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2024604

Change-Id: I95d66af1fb81be4b3f93e8a7fb9e145ff942ff45