pixel-sepolicy: pixelstats: sysfs vendor_mm

pixelstats: Add /sysfs/kernel/vendor_mm/* for mm metrics

Bug: 336764005
Test: local test: no related avc denied in dmesg and logcat logs
Change-Id: I4328187cb99106d8aca9f3e64624135f10cb9bee
Signed-off-by: Robin Hsu <robinhsu@google.com>
diff --git a/pixelstats/genfs_contexts b/pixelstats/genfs_contexts
index 5146b85..9bb4caa 100644
--- a/pixelstats/genfs_contexts
+++ b/pixelstats/genfs_contexts
@@ -1,3 +1,4 @@
 genfscon debugfs /physical-memory-group-manager                          u:object_r:debugfs_mgm:s0
 genfscon sysfs /kernel/pixel_stat                                        u:object_r:sysfs_pixel_stat:s0
 genfscon proc  /vendor_mm                                                u:object_r:proc_vendor_mm:s0
+genfscon sysfs /kernel/vendor_mm                                         u:object_r:sysfs_vendor_mm:s0