Game Driver: sepolicy update for plumbing GpuStats into GpuService

Allow all the app process with GUI to send GPU health metrics stats to
GpuService during the GraphicsEnvironment setup stage for the process.

Bug: 123529932
Test: Build, flash and boot. No selinux denials.
Change-Id: Ic7687dac3c8a3ea43fa744a6ae8a45716951c4df
diff --git a/private/system_app.te b/private/system_app.te
index 39af1e6..3f0d335 100644
--- a/private/system_app.te
+++ b/private/system_app.te
@@ -66,6 +66,9 @@
 # Allow system apps to interact with incidentd
 binder_call(system_app, incidentd)
 
+# Allow system apps to interact with gpuservice
+binder_call(system_app, gpuservice)
+
 allow system_app servicemanager:service_manager list;
 # TODO: scope this down? Too broad?
 allow system_app {