drm/stm: ltdc: remove error message about scaling

Remove error message about scaling & replace it by a debug
message to avoid too much error.
Signed-off-by: Yannick Fertre <yannick.fertre@foss.st.com>
Acked-by: Raphael Gallais-Pou <raphael.gallais-pou@foss.st.com>
Signed-off-by: Philippe Cornu <philippe.cornu@foss.st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220603134250.592408-1-yannick.fertre@foss.st.com

drivers/gpu/drm/stm/ltdc.c

@@ -1218,7 +1218,8 @@ static int ltdc_plane_atomic_check(struct drm_plane *plane,
 
 	/* Reject scaling */
 	if (src_w != new_plane_state->crtc_w || src_h != new_plane_state->crtc_h) {
-		DRM_ERROR("Scaling is not supported");
+		DRM_DEBUG_DRIVER("Scaling is not supported");
+
 		return -EINVAL;
 	}