SF: Add missing ATRACE_TAG to VsyncSchedule.cpp am: c621d8d2be

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/19035667

Change-Id: I00b11b0df8b1eef3acd6447f7b87383b8f1cd33a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>