Policy for overlay_remounter

Test: Manual
Bug: 388912628
Change-Id: I9f27647f0e8d3ece229e7a46d50d54aa1f76fd76
diff --git a/private/init.te b/private/init.te
index 35d7647..6f0ee80 100644
--- a/private/init.te
+++ b/private/init.te
@@ -814,7 +814,7 @@
 # The init domain is only entered via an exec based transition from the
 # kernel domain, never via setcon().
 neverallow domain init:process dyntransition;
-neverallow { domain -kernel } init:process transition;
+neverallow { domain -kernel userdebug_or_eng(`-overlay_remounter') } init:process transition;
 neverallow init { file_type fs_type -init_exec }:file entrypoint;
 
 # Never read/follow symlinks created by shell or untrusted apps.