rtc: 88pm860x: set range

The 88pm860x RTC is a 32bit read only seconds counter with a 32bit offset.

Link: https://lore.kernel.org/r/20200311223956.51352-4-alexandre.belloni@bootlin.comSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-88pm860x.c

@@ -353,6 +353,7 @@ static int pm860x_rtc_probe(struct platform_device *pdev)
 	pm860x_rtc_dt_init(pdev, info);
 
 	info->rtc_dev->ops = &pm860x_rtc_ops;
+	info->rtc_dev->range_max = U32_MAX;
 
 	ret = rtc_register_device(info->rtc_dev);
 	if (ret)