rtc: ds1685: switch to RTC_FEATURE_UPDATE_INTERRUPT

Stop using uie_unsupported and clear RTC_FEATURE_UPDATE_INTERRUPT instead.
There is currently a missing information as to why this is not supported on
ioc3.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220309162301.61679-1-alexandre.belloni@bootlin.com

drivers/rtc/rtc-ds1685.c

@@ -1273,7 +1273,7 @@ ds1685_rtc_probe(struct platform_device *pdev)
 
 	/* See if the platform doesn't support UIE. */
 	if (pdata->uie_unsupported)
-		rtc_dev->uie_unsupported = 1;
+		clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc_dev->features);
 
 	rtc->dev = rtc_dev;