MPC512x: remove include/mpc512x.h

Move needed definitions (register descriptions etc.) from
include/mpc512x.h  into  include/asm-ppc/immap_512x.h.

Instead of using a #define'd register offset, use a function that
provides the PATA controller's base address.

All the rest of include/mpc512x.h are register offset definitions
which can be eliminated by proper use of C structures.

There are only a few register offsets remaining that are needed in
cpu/mpc512x/start.S; for these we provide cpu/mpc512x/asm-offsets.h
which is intended as a temporary workaround only. In a later patch
this file will be removed, too, and then auto-generated from the
respective C structs.

Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: John Rigby <jcrigby@gmail.com>
diff --git a/cpu/mpc512x/start.S b/cpu/mpc512x/start.S
index 360682d..178e5d1 100644
--- a/cpu/mpc512x/start.S
+++ b/cpu/mpc512x/start.S
@@ -1,7 +1,7 @@
 /*
  * Copyright (C) 1998  Dan Malek <dmalek@jlc.net>
  * Copyright (C) 1999  Magnus Damm <kieraypc01.p.y.kie.era.ericsson.se>
- * Copyright (C) 2000, 2001, 2002, 2007 Wolfgang Denk <wd@denx.de>
+ * Copyright (C) 2000-2009 Wolfgang Denk <wd@denx.de>
  * Copyright Freescale Semiconductor, Inc. 2004, 2006. All rights reserved.
  *
  * See file CREDITS for list of people who contributed to this
@@ -30,12 +30,14 @@
  */
 
 #include <config.h>
-#include <mpc512x.h>
 #include <timestamp.h>
 #include <version.h>
 
 #define CONFIG_521X	1		/* needed for Linux kernel header files*/
 
+#include <asm/immap_512x.h>
+#include "asm-offsets.h"
+
 #include <ppc_asm.tmpl>
 #include <ppc_defs.h>