disp: msm: sde: add new function for updating the cp feature lists only

When sde_crtc_atomic_begin is called before crtc is enabled, all the
color processing features need to be moved from active_list to
dirty_list after sde_cp_crtc_apply_properties(). However, the
ltm_hist_en flag doesn't need to be set to false in this case.
Setting ltm_hist_en to false in this case will result LTM merge_en bit
being cleared incorrectly. This change replaces sde_cp_crtc_suspend()
with a new function that only updates the color processing feature lists
in sde_crtc_atomic_begin().

Change-Id: I75d7874899838855bda05a1e8eca0cb9523417e9
Signed-off-by: Ping Li <pingli@quicinc.com>

msm/sde/sde_crtc.c

@@ -3620,7 +3620,7 @@ static void sde_crtc_atomic_begin(struct drm_crtc *crtc,
 		sde_cp_crtc_apply_properties(crtc);
 
 	if (!sde_crtc->enabled)
-		sde_cp_crtc_suspend(crtc);
+		sde_cp_crtc_mark_features_dirty(crtc);
 
 	/*
 	 * PP_DONE irq is only used by command mode for now.