[WATCHDOG] More coding-style and trivial clean-up

Some more cleaning-up of the watchdog drivers.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/wdt977.c b/drivers/watchdog/wdt977.c
index 60e28d4..90ef70e 100644
--- a/drivers/watchdog/wdt977.c
+++ b/drivers/watchdog/wdt977.c
@@ -401,7 +401,7 @@
 			return -EFAULT;
 
 		if (wdt977_set_timeout(new_timeout))
-		    return -EINVAL;
+			return -EINVAL;
 
 		wdt977_keepalive();
 		/* Fall */