fix file specification in comments

Many files include the filename at the beginning, serveral used a wrong one.

Signed-off-by: Uwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/drivers/char/watchdog/ixp2000_wdt.c b/drivers/char/watchdog/ixp2000_wdt.c
index c91d9a6..fd955db 100644
--- a/drivers/char/watchdog/ixp2000_wdt.c
+++ b/drivers/char/watchdog/ixp2000_wdt.c
@@ -1,5 +1,5 @@
 /*
- * drivers/watchdog/ixp2000_wdt.c
+ * drivers/char/watchdog/ixp2000_wdt.c
  *
  * Watchdog driver for Intel IXP2000 network processors
  *