Allow virtual_camera to read sysfs_gpu dirs

This permission is necessary for partners' gpu devices.

Bug: 352768417
Test: TH
(cherry picked from https://android-review.googlesource.com/q/commit:fe3a27a568a61c02036156e106f57e8566c09790)
Merged-In: I256f518171d420edee71ad9dcca05423f9fa0582
Change-Id: I256f518171d420edee71ad9dcca05423f9fa0582
diff --git a/private/virtual_camera.te b/private/virtual_camera.te
index 6b3be0c..6888a4e 100644
--- a/private/virtual_camera.te
+++ b/private/virtual_camera.te
@@ -40,7 +40,7 @@
 # Allow virtual_camera to use GPU
 allow virtual_camera gpu_device:chr_file rw_file_perms;
 allow virtual_camera gpu_device:dir r_dir_perms;
-allow virtual_camera sysfs_gpu:file r_file_perms;
+r_dir_file(virtual_camera, sysfs_gpu)
 
 # Allow virtual camera to use graphics composer fd-s (fences).
 allow virtual_camera hal_graphics_composer:fd use;