Add native boot crash rollback reason type

Extend the RollbackReasonType enum to allow the logging
of native crashes that occurred during boot

Test: Builds
Bug: 138782888
Change-Id: I3bf321c321cf97c02bbe9cfa0f3ab58fbbf17258

cmds/statsd/src/atoms.proto

@@ -1741,6 +1741,7 @@ message WatchdogRollbackOccurred {
         REASON_EXPLICIT_HEALTH_CHECK = 2;
         REASON_APP_CRASH = 3;
         REASON_APP_NOT_RESPONDING = 4;
+        REASON_NATIVE_CRASH_DURING_BOOT = 5;
     }
     optional RollbackReasonType rollback_reason = 4;