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/include/linux/ppdev.h b/include/linux/ppdev.h
index f376a75..dc18c5d 100644
--- a/include/linux/ppdev.h
+++ b/include/linux/ppdev.h
@@ -1,5 +1,5 @@
 /*
- * linux/drivers/char/ppdev.h
+ * linux/include/linux/ppdev.h
  *
  * User-space parallel port device driver (header file).
  *