drivers/rtc/rtc-at32ap700x.c: fix checkpatch error

Fixes the following error:
  ERROR: space required before the open parenthesis '('
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-at32ap700x.c

@@ -141,7 +141,7 @@ static int at32_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
 
 	spin_lock_irq(&rtc->lock);
 
-	if(enabled) {
+	if (enabled) {
 		if (rtc_readl(rtc, VAL) > rtc->alarm_time) {
 			ret = -EINVAL;
 			goto out;