drm/msm/dpu: remove DSPP_SC7180_MASK

drm/msm/dpu: remove DSPP_SC7180_MASK

Stop declaring DPU_DSPP_PCC as a part of the DSPP features, use the
presence of the PCC sblk to check whether PCC is present in the hardware
or not.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/655373/
Link: https://lore.kernel.org/r/20250522-dpu-drop-features-v5-7-3b2085a07884@oss.qualcomm.com