rtc: ds1307: 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/20220309162301.61679-3-alexandre.belloni@bootlin.com

drivers/rtc/rtc-ds1307.c

@@ -1955,7 +1955,7 @@ static int ds1307_probe(struct i2c_client *client,
 		dev_info(ds1307->dev,
 			 "'wakeup-source' is set, request for an IRQ is disabled!\n");
 		/* We cannot support UIE mode if we do not have an IRQ line */
-		ds1307->rtc->uie_unsupported = 1;
+		clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, ds1307->rtc->features);
 	}
 
 	if (want_irq) {