rtc: tps65910: remove tps65910_rtc_ops_noirq

Clear RTC_FEATURE_ALARM to signal that alarms are not available instead of
having a supplementary struct rtc_class_ops without alarm callbacks.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210110231752.1418816-18-alexandre.belloni@bootlin.com

drivers/rtc/rtc-tps65910.c

@@ -361,13 +361,6 @@ static const struct rtc_class_ops tps65910_rtc_ops = {
 	.set_offset	= tps65910_set_offset,
 };
 
-static const struct rtc_class_ops tps65910_rtc_ops_noirq = {
-	.read_time	= tps65910_rtc_read_time,
-	.set_time	= tps65910_rtc_set_time,
-	.read_offset	= tps65910_read_offset,
-	.set_offset	= tps65910_set_offset,
-};
-
 static int tps65910_rtc_probe(struct platform_device *pdev)
 {
 	struct tps65910 *tps65910 = NULL;
@@ -425,12 +418,12 @@ static int tps65910_rtc_probe(struct platform_device *pdev)
 		irq = -1;
 
 	tps_rtc->irq = irq;
-	if (irq != -1) {
+	if (irq != -1)
 		device_set_wakeup_capable(&pdev->dev, 1);
-		tps_rtc->rtc->ops = &tps65910_rtc_ops;
-	} else
-		tps_rtc->rtc->ops = &tps65910_rtc_ops_noirq;
+	else
+		clear_bit(RTC_FEATURE_ALARM, tps_rtc->rtc->features);
 
+	tps_rtc->rtc->ops = &tps65910_rtc_ops;
 	tps_rtc->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
 	tps_rtc->rtc->range_max = RTC_TIMESTAMP_END_2099;