rtc: sa1100: don't set PIE frequency

It doesn't make sense to set the PIE frequency from the driver. Let
userspace do its job.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-sa1100.c

@@ -224,7 +224,6 @@ int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info)
 	info->rtc = rtc;
 
 	rtc->max_user_freq = RTC_FREQ;
-	rtc_irq_set_freq(rtc, NULL, RTC_FREQ);
 
 	/* Fix for a nasty initialization problem the in SA11xx RTSR register.
 	 * See also the comments in sa1100_rtc_interrupt().