dragon: update vsync phase numbers

In some cases, extra time is needed by drm hwcomposer
reduce vsync phase numbers to accomplish this.

Bug: 62031651
Test: run cts -m CtsViewTestCases -t android.view.cts.DisplayRefreshRateTest#testRefreshRate
Change-Id: I1442e69d8f8d12b1e9b87e1e03bc6156fd801abf
1 file changed