disp: msm: sde: disable vsync counter before tear check update

Disable vsync counter before single buffer tear check
update. It allows to trigger the resolution switch
frame as posted start frame.

Change-Id: I2726372fd0e6d14ab0f79e3e3b0731a074158682
Signed-off-by: Dhaval Patel <quic_pdhaval@quicinc.com>
Signed-off-by: Jayaprakash Madisetty <quic_jmadiset@quicinc.com>