md: move lots of #include lines out of .h files and into .c

This makes the includes more explicit, and is preparation for moving
md_k.h to drivers/md/md.h

Remove include/raid/md.h as its only remaining use was to #include
other files.

Signed-off-by: NeilBrown <neilb@suse.de>

include/linux/raid/md.h

@@ -1,39 +0,0 @@
-/*
-   md.h : Multiple Devices driver for Linux
-          Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
-          Copyright (C) 1994-96 Marc ZYNGIER
-	  <zyngier@ufr-info-p7.ibp.fr> or
-	  <maz@gloups.fdn.fr>
-	  
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-   
-   You should have received a copy of the GNU General Public License
-   (for example /usr/src/linux/COPYING); if not, write to the Free
-   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
-*/
-
-#ifndef _MD_H
-#define _MD_H
-
-#include <linux/blkdev.h>
-#include <linux/seq_file.h>
-
-/*
- * 'md_p.h' holds the 'physical' layout of RAID devices
- * 'md_u.h' holds the user <=> kernel API
- *
- * 'md_k.h' holds kernel internal definitions
- */
-
-#include <linux/raid/md_p.h>
-#include <linux/raid/md_u.h>
-#include <linux/raid/md_k.h>
-
-#ifdef CONFIG_MD
-
-#endif /* CONFIG_MD */
-#endif 
-

include/linux/raid/md_k.h

@@ -15,9 +15,6 @@
 #ifndef _MD_K_H
 #define _MD_K_H
 
-/* and dm-bio-list.h is not under include/linux because.... ??? */
-#include "../../../drivers/md/dm-bio-list.h"
-
 #ifdef CONFIG_BLOCK
 
 #define MaxSector (~(sector_t)0)

include/linux/raid/xor.h

@@ -1,8 +1,6 @@
 #ifndef _XOR_H
 #define _XOR_H
 
-#include <linux/raid/md.h>
-
 #define MAX_XOR_BLOCKS 4
 
 extern void xor_blocks(unsigned int count, unsigned int bytes,