Surfaceflinger: rename PhaseOffsets to VsyncConfiguration

Renaming for easier diff with upcoming CLs.

Test: boot
Bug: 162888874
Change-Id: I38b6b3675e3a6ca8ad2a8ac66d8566930779c08e
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index e9970cf..9a86625 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -122,8 +122,8 @@
 #include "Scheduler/EventThread.h"
 #include "Scheduler/LayerHistory.h"
 #include "Scheduler/MessageQueue.h"
-#include "Scheduler/PhaseOffsets.h"
 #include "Scheduler/Scheduler.h"
+#include "Scheduler/VsyncConfiguration.h"
 #include "StartPropertySetThread.h"
 #include "SurfaceFlingerProperties.h"
 #include "SurfaceInterceptor.h"