arm926ejs, tx25: add support for ELF relocations

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/arch/arm/cpu/arm926ejs/start.S b/arch/arm/cpu/arm926ejs/start.S
index 49ca839..e882487 100644
--- a/arch/arm/cpu/arm926ejs/start.S
+++ b/arch/arm/cpu/arm926ejs/start.S
@@ -279,10 +279,10 @@
  */
 #ifdef CONFIG_NAND_SPL
 	ldr     r0, _nand_boot_ofs
-	adr	r1, _start
-	add	pc, r0, r1
-_nand_boot_ofs
-	: .word nand_boot - _start
+	mov	pc, r0
+
+_nand_boot_ofs:
+	.word nand_boot
 #else
 	ldr	r0, _board_init_r_ofs
 	adr	r1, _start