SurfaceFlinger: Set property in separate thread in init

By setting property in a separate thread, the CL aims to
avoid slow initilization in SurfaceFlinger::init where
SurfaceFlinger is waiting on property_service.

Bug: 34499826
Test: on marlin
Change-Id: I91afad3cbc9a2b31aa89ae9cc752ad491cc9d8e4
diff --git a/services/surfaceflinger/EventControlThread.h b/services/surfaceflinger/EventControlThread.h
index 9368db6..1b1ef75 100644
--- a/services/surfaceflinger/EventControlThread.h
+++ b/services/surfaceflinger/EventControlThread.h
@@ -45,4 +45,4 @@
 
 }
 
-#endif // ANDROID_DISPSYNC_H
+#endif // ANDROID_EVENTCONTROLTHREAD_H