Selinux policy for bootreceiver tracing instance

Create contexts for /sys/kernel/tracing/instances/bootreceiver
Allow read access to files in this dir for system_server.

Bug: 172316664
Bug: 181778620
Test: manual runs with KFENCE enabled
Signed-off-by: Alexander Potapenko <glider@google.com>
Change-Id: I7021a9f32b1392b9afb77294a1fd0a1be232b1f2
diff --git a/private/genfs_contexts b/private/genfs_contexts
index 21a1ae9..79b0313 100644
--- a/private/genfs_contexts
+++ b/private/genfs_contexts
@@ -177,6 +177,8 @@
 
 genfscon debugfs /tracing/instances                   u:object_r:debugfs_tracing_instances:s0
 genfscon tracefs /instances                           u:object_r:debugfs_tracing_instances:s0
+genfscon debugfs /tracing/instances/bootreceiver      u:object_r:debugfs_bootreceiver_tracing:s0
+genfscon tracefs /instances/bootreceiver              u:object_r:debugfs_bootreceiver_tracing:s0
 genfscon debugfs /tracing/instances/mm_events         u:object_r:debugfs_mm_events_tracing:s0
 genfscon tracefs /instances/mm_events                 u:object_r:debugfs_mm_events_tracing:s0
 genfscon debugfs /tracing/instances/wifi              u:object_r:debugfs_wifi_tracing:s0