Selinux permissions for incidentd project

Bug: 64222712
Test: manual
Change-Id: Ica77ae3c9e535eddac9fccf11710b0bcb3254ab3
diff --git a/private/system_server.te b/private/system_server.te
index 2054d99..035e8f1 100644
--- a/private/system_server.te
+++ b/private/system_server.te
@@ -135,6 +135,7 @@
 
 # Read /sys/kernel/debug/wakeup_sources.
 allow system_server debugfs:file r_file_perms;
+allow system_server debugfs_wakeup_sources:file r_file_perms;
 
 # The DhcpClient and WifiWatchdog use packet_sockets
 allow system_server self:packet_socket create_socket_perms_no_ioctl;