[S390] hypfs comment cleanup.

Correct some comments in the hypervisor filesystem.
Signed-off-by: NMichael Holzheu <holzheu@de.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/hypfs/hypfs.h

 /*
- *  fs/hypfs/hypfs.h
+ *  arch/s390/hypfs/hypfs.h
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006

arch/s390/hypfs/hypfs_diag.c

 /*
- *  fs/hypfs/hypfs_diag.c
+ *  arch/s390/hypfs/hypfs_diag.c
  *    Hypervisor filesystem for Linux on s390. Diag 204 and 224
  *    implementation.
  *

arch/s390/hypfs/hypfs_diag.h

 /*
- *  fs/hypfs/hypfs_diag.h
+ *  arch/s390/hypfs_diag.h
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006

arch/s390/hypfs/inode.c

 /*
- *  fs/hypfs/inode.c
+ *  arch/s390/hypfs/inode.c
  *    Hypervisor filesystem for Linux on s390.
  *
  *    Copyright (C) IBM Corp. 2006

drivers/base/hypervisor.c

 /*
  * hypervisor.c - /sys/hypervisor subsystem.
  *
- * This file is released under the GPLv2
+ * Copyright (C) IBM Corp. 2006
  *
+ * This file is released under the GPLv2
  */
 
 #include <linux/kobject.h>