GPU Memory: add sepolicy rules around bpf for gpuservice

1. Allow gpuservice to access tracepoint id
2. Allow gpuservice to access bpf program
3. Allow gpuservice to attach bpf program to tracepoint
4. Allow gpuservice to access bpf filesystem
5. Allow gpuservice to run bpf program and read map through bpfloader
6. Allow gpuservice to check a property to ensure bpf program loaded

Bug: 136023082
Test: adb shell dumpsys gpu --gpumem
Change-Id: Ic808a7e452b71c54908cdff806f41f51ab66ffd8
diff --git a/private/genfs_contexts b/private/genfs_contexts
index d4d7fff..de1edd9 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -246,6 +246,7 @@
 genfscon tracefs /events/task/task_rename/                               u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/task/task_newtask/                              u:object_r:debugfs_tracing:s0
 genfscon tracefs /events/ftrace/print/                                   u:object_r:debugfs_tracing:s0
+genfscon tracefs /events/gpu_mem/gpu_mem_total                           u:object_r:debugfs_tracing:s0
 
 genfscon debugfs /tracing/trace_clock                                            u:object_r:debugfs_tracing:s0
 genfscon debugfs /tracing/buffer_size_kb                                         u:object_r:debugfs_tracing:s0