Add setEthernetEnabled and its listener API

Bug: 171872016
Test: atest EthernetServiceTests

Merged-In: Iefd24d955572589c5bd3ca9a8139ea6e44979e8a
Change-Id: Iefd24d955572589c5bd3ca9a8139ea6e44979e8a
diff --git a/framework-t/src/android/net/IEthernetManager.aidl b/framework-t/src/android/net/IEthernetManager.aidl
index 95ae907..44e27e2 100644
--- a/framework-t/src/android/net/IEthernetManager.aidl
+++ b/framework-t/src/android/net/IEthernetManager.aidl
@@ -43,4 +43,5 @@
         in INetworkInterfaceOutcomeReceiver listener);
     void connectNetwork(String iface, in INetworkInterfaceOutcomeReceiver listener);
     void disconnectNetwork(String iface, in INetworkInterfaceOutcomeReceiver listener);
+    void setEthernetEnabled(boolean enabled);
 }