watchdog: asm9260_wdt: don't round closest with get_timeleft

We should never return more time left than there actually is. So, switch
to a plain divider instead of DIV_ROUND_CLOSEST.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/asm9260_wdt.c

@@ -82,7 +82,7 @@ static unsigned int asm9260_wdt_gettimeleft(struct watchdog_device *wdd)
 
 	counter = ioread32(priv->iobase + HW_WDTV);
 
-	return DIV_ROUND_CLOSEST(counter, priv->wdt_freq);
+	return counter / priv->wdt_freq;
 }
 
 static int asm9260_wdt_updatetimeout(struct watchdog_device *wdd)