Label /product/lib(64)/* as system_lib_file

Bug: 138545724
Test: n/a
Change-Id: Ic707229a04c2484503154110c45f4acb5ff61bd5
diff --git a/private/file_contexts b/private/file_contexts
index 79c3043..a1002ab 100644
--- a/private/file_contexts
+++ b/private/file_contexts
@@ -410,6 +410,8 @@
 /(product|system/product)/etc/selinux/product_service_contexts   u:object_r:service_contexts_file:s0
 /(product|system/product)/etc/selinux/product_mac_permissions\.xml u:object_r:mac_perms_file:s0
 
+/(product|system/product)/lib(64)?(/.*)?                         u:object_r:system_lib_file:s0
+
 #############################
 # SystemExt files
 #