Give SystemUI the OVERRIDE_WIFI_CONFIG permission.

Settings already has this permission, and SystemUI needs it as
well so that the changes made by Wi-Fi Quick Settings are
recognized to be made by the system and not just by any app.

Bug: 20081183
Change-Id: Ie1760fc24f5f74839718fff9763f38c80cdda3ff
diff --git a/packages/SystemUI/AndroidManifest.xml b/packages/SystemUI/AndroidManifest.xml
index 012c84c..a8a4baa 100644
--- a/packages/SystemUI/AndroidManifest.xml
+++ b/packages/SystemUI/AndroidManifest.xml
@@ -53,6 +53,7 @@
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
+    <uses-permission android:name="android.permission.OVERRIDE_WIFI_CONFIG" />
     <uses-permission android:name="android.permission.MANAGE_NETWORK_POLICY" />
     <uses-permission android:name="android.permission.CONNECTIVITY_INTERNAL" />
     <uses-permission android:name="android.permission.READ_NETWORK_USAGE_HISTORY" />