Create a new NETWORK_SETTINGS permission

Create a new signature permission that allows SystemUI to call critical
methods in Connectivity and Wifi Services.

Bug: 36760523
Test: make
Change-Id: I475e4c1c040fd3dee87b86d2845c0801195d29d1
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index f418435..18cfc99 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1314,6 +1314,13 @@
     <permission android:name="android.permission.NETWORK_STACK"
         android:protectionLevel="signature" />
 
+    <!-- Allows Settings and SystemUI to call methods in Networking services
+         <p>Not for use by third-party or privileged applications.
+         @hide This should only be used by Settings and SystemUI.
+    -->
+    <permission android:name="android.permission.NETWORK_SETTINGS"
+        android:protectionLevel="signature" />
+
     <!-- ======================================= -->
     <!-- Permissions for short range, peripheral networks -->
     <!-- ======================================= -->