Allow the system to rename wallpaper files

am: 39cfed0b

* commit '39cfed0b':
  Allow the system to rename wallpaper files

Change-Id: I4404f9f9d9ffb78af3c50beefd1b1f220662d181

system_server.te

@@ -284,7 +284,7 @@ allow system_server { apk_data_file apk_private_data_file }:{ dir file } { relab
 # Relabel wallpaper.
 allow system_server system_data_file:file relabelfrom;
 allow system_server wallpaper_file:file relabelto;
-allow system_server wallpaper_file:file { rw_file_perms unlink };
+allow system_server wallpaper_file:file { rw_file_perms rename unlink };
 
 # Backup of wallpaper imagery uses temporary hard links to avoid data churn
 allow system_server { system_data_file wallpaper_file }:file link;