drm/msm/dpu: drop pe argument from _dpu_hw_sspp_setup_scaler3

The _dpu_hw_sspp_setup_scaler3 (hw_sspp->setup_scaler) does not use pe
argument. Let's remove it while we are cleaning scaled configuration.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/20211201225140.2481577-3-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>