Adapt to 6.0.1_r52 backup whitelist

As of f/b 9b8c6d2df35455ce9e67907edded1e4a2ecb9e28
 we need to whitelist who can be backup services.

Change-Id: I52a004924e6d2651c5ecdec51a8c5a80bdd54a38

config/common.mk

@@ -84,6 +84,10 @@ PRODUCT_COPY_FILES += \
     vendor/cm/prebuilt/common/bin/50-cm.sh:system/addon.d/50-cm.sh \
     vendor/cm/prebuilt/common/bin/blacklist:system/addon.d/blacklist
 
+# Backup Services whitelist
+PRODUCT_COPY_FILES += \
+    vendor/cm/config/permissions/backup.xml:system/etc/sysconfig/backup.xml
+
 # Signature compatibility validation
 PRODUCT_COPY_FILES += \
     vendor/cm/prebuilt/common/bin/otasigcheck.sh:install/bin/otasigcheck.sh

config/permissions/backup.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2016 The CyanogenMod Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<config>
+    <!-- Whitelist of what components are permitted as backup data transports.  The
+         'service' attribute here is a flattened ComponentName string. -->
+    <backup-transport-whitelisted-service
+        service="android/com.android.internal.backup.LocalTransportService" />
+    <backup-transport-whitelisted-service
+        service="com.google.android.gms/.backup.BackupTransportService" />
+    <backup-transport-whitelisted-service
+        service="com.google.android.gms/.backup.component.D2dTransportService" />
+</config>