Documented range of event logtags used by Android Automotive.

Test: N/A
Bug: 153900032

Change-Id: I2e35d56f89becea33c4a4b7fb6af8de3ccbb087a
diff --git a/logcat/event.logtags b/logcat/event.logtags
index 3a1d36f..56a670a 100644
--- a/logcat/event.logtags
+++ b/logcat/event.logtags
@@ -145,6 +145,8 @@
 # libcore failure logging
 90100 exp_det_cert_pin_failure (certs|4)
 
+# 150000 - 160000 reserved for Android Automotive builds
+
 1397638484 snet_event_log (subtag|3) (uid|1) (message|3)
 
 # for events that go to stats log buffer