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>

arch/sh/kernel/cpu/ubc.S

@@ -1,5 +1,5 @@
 /*
- * arch/sh/kernel/ubc.S
+ * arch/sh/kernel/cpu/ubc.S
  *
  * Set of management routines for the User Break Controller (UBC)
  *