Merge changes from topic "boot-splash" into pi-dev

* changes:
  surfaceflinger: default to DisplayColorSetting::ENHANCED
  surfaceflinger: signalRefresh after boot animation starts
diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index fe9dd56..31e73fb 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -200,7 +200,7 @@
         { REQ,      "events/vmscan/mm_vmscan_direct_reclaim_end/enable" },
         { REQ,      "events/vmscan/mm_vmscan_kswapd_wake/enable" },
         { REQ,      "events/vmscan/mm_vmscan_kswapd_sleep/enable" },
-        { REQ,      "events/lowmemorykiller/enable" },
+        { OPT,      "events/lowmemorykiller/enable" },
     } },
     { "regulators",  "Voltage and Current Regulators", 0, {
         { REQ,      "events/regulator/enable" },