drm/msm/dsi: Use MSM and DRM DSC helper methods

Use MSM and DRM DSC helper methods to configure DSC for DSI.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/539274/
Link: https://lore.kernel.org/r/20230329-rfc-msm-dsc-helper-v14-8-bafc7be95691@quicinc.com


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>