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>

sound/oss/opl3.c

@@ -1,5 +1,5 @@
 /*
- * sound/opl3.c
+ * sound/oss/opl3.c
  *
  * A low level driver for Yamaha YM3812 and OPL-3 -chips
  *