[automerger skipped] Add EthernetDevice to manage ethernet connection. am: 4d0df88d88 -s ours am: f3f4f9f021 -s ours am: b6d0b82aa6 -s ours am: 336d7a9d4e -s ours am: ed45f0b075 -s ours

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

Change-Id: I8da21674e98bcdf653104b480d6e8868e3ff5e95