sepolicy: Add policies for the new superuser sockets.

Change-Id: Ia3e1044616bee95eb4774254fb098487d983b5db
diff --git a/sepolicy/su.te b/sepolicy/su.te
index 8e63b2f..c2c68fd 100644
--- a/sepolicy/su.te
+++ b/sepolicy/su.te
@@ -6,6 +6,8 @@
 
 userdebug_or_eng(`
   domain_trans(init, su_exec, sudaemon)
+
+  type_transition sudaemon socket_device:sock_file superuser_device;
   # The userspace app uses /dev sockets to control per-app access
   allow sudaemon superuser_device:dir { create rw_dir_perms setattr unlink };
   allow sudaemon superuser_device:sock_file { create setattr unlink write };