disp: msm: sde: clear partial update mask during last close

Clear partial update mask during last close to avoid
rounded corner to be programmed without valid mask during
shell stop/start operations.

Change-Id: I378adc62b5bc5913abfc32fa3528c8e28ea273d4
Signed-off-by: Anjaneya Prasad Musunuri <aprasad@codeaurora.org>

msm/sde/sde_color_processing.c

@@ -2159,6 +2159,7 @@ void sde_cp_crtc_clear(struct drm_crtc *crtc)
 	list_del_init(&sde_crtc->dirty_list);
 	list_del_init(&sde_crtc->ad_active);
 	list_del_init(&sde_crtc->ad_dirty);
+	sde_crtc->cp_pu_feature_mask = 0;
 	mutex_unlock(&sde_crtc->crtc_cp_lock);
 
 	spin_lock_irqsave(&sde_crtc->spin_lock, flags);