Surfaceflinger: rename PhaseOffsets to VsyncConfiguration

Renaming for easier diff with upcoming CLs.

Test: boot
Bug: 162888874
Change-Id: I38b6b3675e3a6ca8ad2a8ac66d8566930779c08e
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp b/services/surfaceflinger/Scheduler/VsyncConfiguration.cpp
similarity index 99%
rename from services/surfaceflinger/Scheduler/PhaseOffsets.cpp
rename to services/surfaceflinger/Scheduler/VsyncConfiguration.cpp
index fe2e406..5373742 100644
--- a/services/surfaceflinger/Scheduler/PhaseOffsets.cpp
+++ b/services/surfaceflinger/Scheduler/VsyncConfiguration.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "PhaseOffsets.h"
+#include "VsyncConfiguration.h"
 
 #include <cutils/properties.h>
 
diff --git a/services/surfaceflinger/Scheduler/PhaseOffsets.h b/services/surfaceflinger/Scheduler/VsyncConfiguration.h
similarity index 100%
rename from services/surfaceflinger/Scheduler/PhaseOffsets.h
rename to services/surfaceflinger/Scheduler/VsyncConfiguration.h