Record timezone_service in compat infra.

Commit: 50889ce0eb4dda1d777b90321ddce3f8046b740d added policy for a
new service, which was not present in O.  This policy introduced a
new type.  Record it as such.

Bug: 62573845
Test: None, prebuilt change only.
Change-Id: If9cfaff813c47d3b1c8374e8abfb4aedb902d486
diff --git a/prebuilts/api/26.0/26.0.ignore.cil b/prebuilts/api/26.0/26.0.ignore.cil
index 9ab26a6..a7cd5c0 100644
--- a/prebuilts/api/26.0/26.0.ignore.cil
+++ b/prebuilts/api/26.0/26.0.ignore.cil
@@ -7,4 +7,5 @@
     e2fs_exec
     kmsg_debug_device
     sysfs_fs_ext4_features
+    timezone_service
     tombstoned_java_trace_socket))