Update sepolicy for GPU profiling properties.

A device must indicate whether GPU profiling is supported or not through
setting these two properties properly. CTS needs to read these two
properties in order to run corresponding compliance tests. Hence need to
update sepolicy for these two properties.

Bug: b/157832445
Test: Test on Pixel 4
Change-Id: I6f400ecbbd5e78b645bb620fa24747e9367c2ff3
Merged-In: I6f400ecbbd5e78b645bb620fa24747e9367c2ff3
diff --git a/private/app.te b/private/app.te
index 3dff8fe..27ef097 100644
--- a/private/app.te
+++ b/private/app.te
@@ -46,3 +46,6 @@
 
 # Don't allow regular apps access to storage configuration properties.
 neverallow { appdomain -mediaprovider_app } storage_config_prop:file no_rw_file_perms;
+
+# Allow to read graphics related properties.
+get_prop(appdomain, graphics_config_prop)