rtc: ds1511: switch to rtc_register_device

This allows for future improvement of the driver.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/rtc-ds1511.c

@@ -477,11 +477,16 @@ static int ds1511_rtc_probe(struct platform_device *pdev)
 	spin_lock_init(&pdata->lock);
 	platform_set_drvdata(pdev, pdata);
 
-	pdata->rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
-					      &ds1511_rtc_ops, THIS_MODULE);
+	pdata->rtc = devm_rtc_allocate_device(&pdev->dev);
 	if (IS_ERR(pdata->rtc))
 		return PTR_ERR(pdata->rtc);
 
+	pdata->rtc->ops = &ds1511_rtc_ops;
+
+	ret = rtc_register_device(pdata->rtc);
+	if (ret)
+		return ret;
+
 	/*
 	 * if the platform has an interrupt in mind for this device,
 	 * then by all means, set it