[automerger skipped] Add EthernetDevice to manage ethernet connection. am: 4d0df88d88 am: b3cd9fad22 am: 3eac3fed78 -s ours

am skip reason: Change-Id I73fe44be3790bdba5a6059fbba3f7264b21eed99 with SHA-1 4d0df88d88 is in history

Change-Id: I02fb69d0e1cd2432c01c3fc59ed44f85404291c2