watchdog: xilinx: Use correct comment indentation

No functional changes.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

drivers/watchdog/of_xilinx_wdt.c

@@ -189,7 +189,7 @@ static int xwdt_probe(struct platform_device *pdev)
 
 	watchdog_set_nowayout(xilinx_wdt_wdd, enable_once);
 
-/*
+	/*
 	 * Twice of the 2^wdt_interval / freq  because the first wdt overflow is
 	 * ignored (interrupt), reset is only generated at second wdt overflow
 	 */