Allow platform signed apps to access platform_compat service

This exception is needed for overriding gated changes in tests.
Bug: 140367850
Test: http://aosp/1113771
Change-Id: I2a76f92fe06c1c759a537dea7539a8899f02b15e
diff --git a/private/platform_app.te b/private/platform_app.te
index 8c2128d..c255605 100644
--- a/private/platform_app.te
+++ b/private/platform_app.te
@@ -68,6 +68,9 @@
 allow platform_app vr_manager_service:service_manager find;
 allow platform_app gpu_service:service_manager find;
 allow platform_app stats_service:service_manager find;
+userdebug_or_eng(`
+  allow platform_app platform_compat_service:service_manager find;
+')
 
 # Allow platform apps to interact with gpuservice
 binder_call(platform_app, gpuservice)