rtc: opal: switch to RTC_FEATURE_UPDATE_INTERRUPT

Stop using uie_unsupported and clear RTC_FEATURE_UPDATE_INTERRUPT instead.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220309162301.61679-7-alexandre.belloni@bootlin.com

drivers/rtc/rtc-opal.c

@@ -250,7 +250,7 @@ static int opal_rtc_probe(struct platform_device *pdev)
 	rtc->ops = &opal_rtc_ops;
 	rtc->range_min = RTC_TIMESTAMP_BEGIN_0000;
 	rtc->range_max = RTC_TIMESTAMP_END_9999;
-	rtc->uie_unsupported = 1;
+	clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features);
 
 	return devm_rtc_register_device(rtc);
 }