Split VsyncEventData from DisplayEventDispatcher.

Bug: 205721584
Test: atest libsurfaceflinger_unittest
Change-Id: I51b18ed356ae7a29f8a88634346c0025321dbe08
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index ec3587b..e17b2c8 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -198,6 +198,7 @@
         "SurfaceComposerClient.cpp",
         "SyncFeatures.cpp",
         "TransactionTracing.cpp",
+        "VsyncEventData.cpp",
         "view/Surface.cpp",
         "WindowInfosListenerReporter.cpp",
         "bufferqueue/1.0/B2HProducerListener.cpp",