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/asm-powerpc/ipic.h b/include/asm-powerpc/ipic.h
index 53079ec..1ce09a3 100644
--- a/include/asm-powerpc/ipic.h
+++ b/include/asm-powerpc/ipic.h
@@ -1,5 +1,5 @@
 /*
- * include/asm-ppc/ipic.h
+ * include/asm-powerpc/ipic.h
  *
  * IPIC external definitions and structure.
  *