am e14ee540: Add an API to check availability of Ethernet interface.

* commit 'e14ee540d6accf3468367f2a25a4540fd3e08051':
  Add an API to check availability of Ethernet interface.
tree: 7e763537b2e37857fd879d1c48dd055c0c90c968
  1. service-t/
  2. Android.mk