Give tethering bluetooth privilege permission

Permisssion of PanService#setBluetoothTethering is change from
BLUETOOTH_ADMIN to BLUETOOTH_PRIVILEGED.
Tethering service need bluetooth privilege permission to enable
bluetooth tethering.

Bug: 146045934
Test: on/off bluetooth tethering
Change-Id: Ib87a5d5a5bb49390aa55e52713bb3539d4a52348
diff --git a/Tethering/AndroidManifest.xml b/Tethering/AndroidManifest.xml
index c71d0d7..9328611 100644
--- a/Tethering/AndroidManifest.xml
+++ b/Tethering/AndroidManifest.xml
@@ -27,7 +27,7 @@
          added to the privileged permissions whitelist for that package. -->
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.BLUETOOTH" />
-    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />
     <uses-permission android:name="android.permission.BROADCAST_STICKY" />
     <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
     <uses-permission android:name="android.permission.MANAGE_USB" />