unify version_string

This patch removes the architecture specific implementation of
version_string where possible. Some architectures use a special place
and therefore we provide U_BOOT_VERSION_STRING definition and a common
weak symbol version_string.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
CC: Mike Frysinger <vapier@gentoo.org>
CC: Peter Pan <pppeterpppan@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/m68k/cpu/mcf5227x/start.S b/arch/m68k/cpu/mcf5227x/start.S
index d09d492..c5096a8 100644
--- a/arch/m68k/cpu/mcf5227x/start.S
+++ b/arch/m68k/cpu/mcf5227x/start.S
@@ -23,7 +23,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -508,7 +507,5 @@
 
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4
diff --git a/arch/m68k/cpu/mcf523x/start.S b/arch/m68k/cpu/mcf523x/start.S
index a726b59..e6a69ab 100644
--- a/arch/m68k/cpu/mcf523x/start.S
+++ b/arch/m68k/cpu/mcf523x/start.S
@@ -23,7 +23,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -270,7 +269,5 @@
 
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4
diff --git a/arch/m68k/cpu/mcf52x2/start.S b/arch/m68k/cpu/mcf52x2/start.S
index f0cfa6f..ee17792 100644
--- a/arch/m68k/cpu/mcf52x2/start.S
+++ b/arch/m68k/cpu/mcf52x2/start.S
@@ -23,7 +23,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -330,7 +329,5 @@
 
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4
diff --git a/arch/m68k/cpu/mcf532x/start.S b/arch/m68k/cpu/mcf532x/start.S
index 53ac471..fe98d76 100644
--- a/arch/m68k/cpu/mcf532x/start.S
+++ b/arch/m68k/cpu/mcf532x/start.S
@@ -26,7 +26,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -283,7 +282,5 @@
 /*------------------------------------------------------------------------------*/
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4
diff --git a/arch/m68k/cpu/mcf5445x/start.S b/arch/m68k/cpu/mcf5445x/start.S
index 5255f37..9906014 100644
--- a/arch/m68k/cpu/mcf5445x/start.S
+++ b/arch/m68k/cpu/mcf5445x/start.S
@@ -23,7 +23,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -540,7 +539,5 @@
 
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4
diff --git a/arch/m68k/cpu/mcf547x_8x/start.S b/arch/m68k/cpu/mcf547x_8x/start.S
index e30923f..ec65cae 100644
--- a/arch/m68k/cpu/mcf547x_8x/start.S
+++ b/arch/m68k/cpu/mcf547x_8x/start.S
@@ -23,7 +23,6 @@
 
 #include <asm-offsets.h>
 #include <config.h>
-#include <timestamp.h>
 #include "version.h"
 #include <asm/cache.h>
 
@@ -277,7 +276,5 @@
 
 	.globl	version_string
 version_string:
-	.ascii U_BOOT_VERSION
-	.ascii " (", U_BOOT_DATE, " - ", U_BOOT_TIME, ")"
-	.ascii CONFIG_IDENT_STRING, "\0"
+	.ascii U_BOOT_VERSION_STRING, "\0"
 	.align 4