sepolicy: add rule for new debug file node

W dumpstate@1.1-s: type=1400 audit(0.0:7): avc: denied { read } for name="logbuffer_maxfg_monitor" dev="tmpfs" ino=500 scontext=u:r:hal_dumpstate_default:s0 tcontext=u:object_r:device:s0 tclass=chr_file permissive=0

Bug: 196755019
Signed-off-by: Jenny Ho <hsiufangho@google.com>
Change-Id: I0ddf68d5e15fe8d77d8d61287f65621c14024f46
diff --git a/whitechapel/vendor/google/file_contexts b/whitechapel/vendor/google/file_contexts
index fdbd87e..bc03a78 100644
--- a/whitechapel/vendor/google/file_contexts
+++ b/whitechapel/vendor/google/file_contexts
@@ -111,6 +111,10 @@
 /dev/logbuffer_pca9468         u:object_r:logbuffer_device:s0
 /dev/logbuffer_cpm             u:object_r:logbuffer_device:s0
 
+/dev/logbuffer_maxfg_monitor        u:object_r:logbuffer_device:s0
+/dev/logbuffer_maxfg_base_monitor   u:object_r:logbuffer_device:s0
+/dev/logbuffer_maxfg_flip_monitor   u:object_r:logbuffer_device:s0
+
 # DM tools device
 /dev/umts_dm0                  u:object_r:radio_device:s0
 /dev/umts_router               u:object_r:radio_device:s0