rtc: at91sam9: correct trivial checkpatch warnings

Correct trivial checkpatch warnings, mostly whitespace issues and
unbalanced braces.
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-at91sam9.c

@@ -44,10 +44,10 @@
  */
 
 #define AT91_RTT_MR		0x00		/* Real-time Mode Register */
-#define AT91_RTT_RTPRES		(0xffff << 0)		/* Real-time Timer Prescaler Value */
-#define AT91_RTT_ALMIEN		(1 << 16)		/* Alarm Interrupt Enable */
-#define AT91_RTT_RTTINCIEN	(1 << 17)		/* Real Time Timer Increment Interrupt Enable */
-#define AT91_RTT_RTTRST		(1 << 18)		/* Real Time Timer Restart */
+#define AT91_RTT_RTPRES		(0xffff << 0)	/* Timer Prescaler Value */
+#define AT91_RTT_ALMIEN		BIT(16)		/* Alarm Interrupt Enable */
+#define AT91_RTT_RTTINCIEN	BIT(17)		/* Increment Interrupt Enable */
+#define AT91_RTT_RTTRST		BIT(18)		/* Timer Restart */
 
 #define AT91_RTT_AR		0x04		/* Real-time Alarm Register */
 #define AT91_RTT_ALMV		(0xffffffff)	/* Alarm Value */
@@ -56,8 +56,8 @@
 #define AT91_RTT_CRTV		(0xffffffff)	/* Current Real-time Value */
 
 #define AT91_RTT_SR		0x0c		/* Real-time Status Register */
-#define AT91_RTT_ALMS		(1 << 0)		/* Real-time Alarm Status */
-#define AT91_RTT_RTTINC		(1 << 1)		/* Real-time Timer Increment */
+#define AT91_RTT_ALMS		BIT(0)		/* Alarm Status */
+#define AT91_RTT_RTTINC		BIT(1)		/* Timer Increment */
 
 /*
  * We store ALARM_DISABLED in ALMV to record that no alarm is set.
@@ -65,7 +65,6 @@
  */
 #define ALARM_DISABLED	((u32)~0)
 
-
 struct sam9_rtc {
 	void __iomem		*rtt;
 	struct rtc_device	*rtcdev;
@@ -494,9 +493,10 @@ static int at91_rtc_suspend(struct device *dev)
 			/* don't let RTTINC cause wakeups */
 			if (mr & AT91_RTT_RTTINCIEN)
 				rtt_writel(rtc, MR, mr & ~AT91_RTT_RTTINCIEN);
-		} else
+		} else {
 			rtt_writel(rtc, MR, mr & ~rtc->imr);
 		}
+	}
 
 	return 0;
 }