init.start was renamed to ro.boottime.init

Test: manual
Bug: 32780225
Change-Id: I07e593d5c1edab62e937a77916ab207ec17e8639
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 02dc5fb..6ec25c5 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -273,7 +273,7 @@
             EventLog.writeEvent(EventLogTags.BOOT_PROGRESS_SYSTEM_RUN, uptimeMillis);
             MetricsLogger.histogram(null, "boot_system_server_init", uptimeMillis);
             // Also report when first stage of init has started
-            long initStartNs = SystemProperties.getLong("init.start", -1);
+            long initStartNs = SystemProperties.getLong("ro.boottime.init", -1);
             if (initStartNs >= 0) {
                 MetricsLogger.histogram(null, "boot_android_init", (int)(initStartNs / 1000000));
             }