drivers/rtc/rtc-ab8500.c: use IRQF_ONESHOT when requesting a threaded IRQ

This driver's IRQ registration is failing because the kernel now forces
IRQs to be ONESHOT if no IRQ handler is passed.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-ab8500.c

@@ -422,7 +422,7 @@ static int __devinit ab8500_rtc_probe(struct platform_device *pdev)
 	}
 
 	err = request_threaded_irq(irq, NULL, rtc_alarm_handler,
-		IRQF_NO_SUSPEND, "ab8500-rtc", rtc);
+		IRQF_NO_SUSPEND | IRQF_ONESHOT, "ab8500-rtc", rtc);
 	if (err < 0) {
 		rtc_device_unregister(rtc);
 		return err;