Changes to add Ethernet settings row item

Adds EthernetSettings row item to NetworkProviderSettings and its
controller.

Flag: com.android.settings.connectivity.ethernet_settings

Test: atest
SettingsRoboTests:
com.android.settings.network.EthernetSwitchPreferenceControllerTest

Change-Id: I27965ad0c8563657b17e0aa6d3bd19b97fcf5615
diff --git a/Android.bp b/Android.bp
index ed094cf..150bdaf 100644
--- a/Android.bp
+++ b/Android.bp
@@ -114,8 +114,8 @@
         "setupdesign-lottie-loading-layout",
         "device_policy_aconfig_flags_lib",
         "keyboard_flags_lib",
-        "settings_connectivity_flags",
         "com_android_systemui_flags_lib",
+        "settings_connectivity_flags_lib",
     ],
 
     plugins: [