watchdog: cleanup spaces before tabs

cleanup spaces before tabs in drivers/watchdog/

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

diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
index 18cdeb4..5a90a4a 100644
--- a/drivers/watchdog/ts72xx_wdt.c
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -68,7 +68,7 @@
  * to control register):
  *	value	description
  *	-------------------------
- * 	0x00	watchdog disabled
+ *	0x00	watchdog disabled
  *	0x01	250ms
  *	0x02	500ms
  *	0x03	1s