Configure sepolicy for TracingServiceProxy

Configures sepolicy to allow for the new TracingServiceProxy system
services, and to allow Perfetto to access the service.

Bug: 175591887
Test: Validated the service started successfullyy, and invoked via CLI
Change-Id: Idb6438948a9d96063f8455544b97ef66267cde23
diff --git a/private/traced.te b/private/traced.te
index 89d3cd2..aa16966 100644
--- a/private/traced.te
+++ b/private/traced.te
@@ -37,6 +37,11 @@
 allow traced traceur_app:fd use;
 allow traced trace_data_file:file { read write };
 
+# Allow perfetto to access the proxy service for notifying Traceur.
+allow traced tracingproxy_service:service_manager find;
+binder_use(traced);
+binder_call(traced, system_server);
+
 # Allow iorapd to pass memfd descriptors to traced, so traced can directly
 # write into the shmem buffer file without doing roundtrips over IPC.
 allow traced iorapd:fd use;