drm: rcar-du: Replace DRM_INFO() with drm_info()

drm_info() adds proper context to the kernel log message, as it receives
the drm_device pointer. It is thus preferred over DRM_INFO(). Replace
the latter with the former.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>

drivers/gpu/drm/renesas/rcar-du/rcar_du_drv.c

@@ -710,7 +710,7 @@ static int rcar_du_probe(struct platform_device *pdev)
 	if (ret)
 		goto error;
 
-	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
+	drm_info(&rcdu->ddev, "Device %s probed\n", dev_name(&pdev->dev));
 
 	drm_fbdev_generic_setup(&rcdu->ddev, 32);