If the two fences being merged contain sync_pts from the same timeline, those two pts will be collapsed into a single pt representing the latter of the two. Change-Id: Iced7ebb7e5a17a0c8b1a2969ba3388a4edb9ecaf Signed-off-by: Erik Gilling <konkers@android.com> Signed-off-by: Ajay Dudani <adudani@codeaurora.org>