Add sepolicy rules for Thread Network HAL

Bug: b/283905423
Test: Build and run the Thread Network stack in Cuttlefish.
Change-Id: I783022c66b80274069f8f3c292d84918f41f8221
diff --git a/private/ot_daemon.te b/private/ot_daemon.te
index 98e1a0a..b22ff90 100644
--- a/private/ot_daemon.te
+++ b/private/ot_daemon.te
@@ -17,8 +17,4 @@
 allow ot_daemon threadnetwork_data_file:file create_file_perms;
 allow ot_daemon threadnetwork_data_file:sock_file {create unlink};
 
-# used for simulation
-userdebug_or_eng(`
-create_pty(ot_daemon);
-domain_auto_trans(ot_daemon, ot_rcp_exec, ot_rcp);
-')
+hal_client_domain(ot_daemon, hal_threadnetwork)