Add backup_initialize event to track initializeDevice() requests
diff --git a/logcat/event-log-tags b/logcat/event-log-tags
index 9344004..a8b044e 100644
--- a/logcat/event-log-tags
+++ b/logcat/event-log-tags
@@ -120,6 +120,7 @@
 2824 backup_package (Package|3),(Size|1|2)
 2825 backup_success (Packages|1|1),(Time|1|3)
 2826 backup_reset (Transport|3)
+2827 backup_initialize
 
 2830 restore_start (Transport|3),(Source|2|5)
 2831 restore_transport_failure