Change signature|system permissions to signature|privileged

Permission protection level changed from signature|system,
which is deprecated to signature|privileged.

Change-Id: I93180786c05f6e0abc5b1ec34a24a006f7c7d299
Signed-off-by: Yury Zhauniarovich <y.zhalnerovich@gmail.com>
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 6442a73..51e03c8 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -26,7 +26,7 @@
     <permission
         android:name="com.android.launcher.permission.PRELOAD_WORKSPACE"
         android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
-        android:protectionLevel="signatureOrSystem" />
+        android:protectionLevel="signature|privileged" />
     <permission
         android:name="com.android.launcher.permission.INSTALL_SHORTCUT"
         android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
@@ -48,7 +48,7 @@
     <permission
         android:name="com.android.launcher.permission.WRITE_SETTINGS"
         android:permissionGroup="android.permission-group.SYSTEM_TOOLS"
-        android:protectionLevel="signatureOrSystem"
+        android:protectionLevel="signature|privileged"
         android:label="@string/permlab_write_settings"
         android:description="@string/permdesc_write_settings"/>