[PATCH] powerpc: trivial: modify comments to refer to new location of files

This patch removes all self references and fixes references to files
in the now defunct arch/ppc64 tree.  I think this accomplises
everything wanted, though there might be a few references I missed.

Signed-off-by: Jon Mason <jdmason@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc/kernel/head_44x.S

@@ -1,6 +1,4 @@
 /*
- * arch/ppc/kernel/head_44x.S
- *
  * Kernel execution entry point code.
  *
  *    Copyright (c) 1995-1996 Gary Thomas <gdt@linuxppc.org>

arch/ppc/kernel/head_8xx.S

@@ -1,6 +1,4 @@
 /*
- *  arch/ppc/kernel/except_8xx.S
- *
  *  PowerPC version
  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
  *  Rewritten by Cort Dougan (cort@cs.nmt.edu) for PReP

arch/ppc/kernel/head_fsl_booke.S

@@ -1,6 +1,4 @@
 /*
- * arch/ppc/kernel/head_fsl_booke.S
- *
  * Kernel execution entry point code.
  *
  *    Copyright (c) 1995-1996 Gary Thomas <gdt@linuxppc.org>

arch/ppc/kernel/traps.c

@@ -1,6 +1,4 @@
 /*
- *  arch/ppc/kernel/traps.c
- *
  *  Copyright (C) 1995-1996  Gary Thomas (gdt@linuxppc.org)
  *
  *  This program is free software; you can redistribute it and/or