msm: vidc: Update DCVS thresholds for sufficient seq change

During sequence change change event, FW notifies the maximum
the number of DPB bufferes required for the clip. Hence for
seq change sufficient event, update the same in driver in
order to update the DCVS thresholds accordingly.

Change-Id: Icae0c1577cf08d8d91aa8c9e20f810ff307940fe
Signed-off-by: Priyanka Gujjula <pgujjula@codeaurora.org>