drm/msm/sde: use cwb qos lut during clone mode for cwb

Concurrent writeback runs in clone mode with primary
display and it is realtime display. That brings realtime
qos requirement on nrt client also.

Change-Id: I73026a539933347b6085c311ba608b6d358de285
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>
Signed-off-by: Krishna Manikandan <mkrishn@codeaurora.org>