arm: unify linker script

all arm boards except a few use the same cpu linker script
so move it to cpu/$(CPU)

that could be overwrite in following order
SOC
BOARD
via the corresponding config.mk

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

board/pxa255_idp/u-boot.lds → cpu/pxa/u-boot.lds

@@ -29,10 +29,10 @@ SECTIONS
 	. = 0x00000000;
 
 	. = ALIGN(4);
-	.text      :
+	.text :
 	{
-	  cpu/pxa/start.o	(.text)
-	  *(.text)
+		cpu/pxa/start.o	(.text)
+		*(.text)
 	}
 
 	. = ALIGN(4);

board/mx1fs2/u-boot.lds → cpu/s3c44b0/u-boot.lds

@@ -19,7 +19,6 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
- *
  */
 
 OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
@@ -30,9 +29,9 @@ SECTIONS
 	. = 0x00000000;
 
 	. = ALIGN(4);
-	.text      :
+	.text :
 	{
-		cpu/arm920t/start.o	(.text)
+		cpu/s3c44b0/start.o	(.text)
 		*(.text)
 	}
 

board/assabet/u-boot.lds → cpu/sa1100/u-boot.lds

 /*
+ * (C) Copyright 2003-2004
+ * MontaVista Software, Inc.
+ *
  * (C) Copyright 2000-2004
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- * 2004 (c) MontaVista Software, Inc.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -30,7 +32,7 @@ SECTIONS
 	. = 0x00000000;
 
 	. = ALIGN(4);
-	.text      :
+	.text :
 	{
 		cpu/sa1100/start.o	(.text)
 		*(.text)
@@ -45,7 +47,6 @@ SECTIONS
 	. = ALIGN(4);
 	.got : { *(.got) }
 
-
 	. = .;
 	__u_boot_cmd_start = .;
 	.u_boot_cmd : { *(.u_boot_cmd) }