Add selinux policy for new BinaryTransparencyService

Bug: 197684182

Test: Manually verified that BinaryTransparencyService is correctly
started and running.

Change-Id: I4eaf5698dd2edb428205afcd57c22502d56d2ec2
diff --git a/private/service.te b/private/service.te
index 7e33715..da0418e 100644
--- a/private/service.te
+++ b/private/service.te
@@ -15,4 +15,5 @@
 type statscompanion_service,        system_server_service, service_manager_type;
 type statsmanager_service,          system_api_service, system_server_service, service_manager_type;
 type tracingproxy_service,          system_server_service, service_manager_type;
+type transparency_service,          system_server_service, service_manager_type;
 type uce_service,                   service_manager_type;