Add an API to check availability of Ethernet interface.

Bug: 18045481
Change-Id: I95358241b431cfe4435ce70c23c9a639b9dc4d58
diff --git a/Android.mk b/Android.mk
index 51a9846..9aa587a 100644
--- a/Android.mk
+++ b/Android.mk
@@ -174,6 +174,7 @@
 	core/java/android/hardware/usb/IUsbManager.aidl \
 	core/java/android/net/IConnectivityManager.aidl \
 	core/java/android/net/IEthernetManager.aidl \
+	core/java/android/net/IEthernetServiceListener.aidl \
 	core/java/android/net/INetworkManagementEventObserver.aidl \
 	core/java/android/net/INetworkPolicyListener.aidl \
 	core/java/android/net/INetworkPolicyManager.aidl \