ARM: */start.S: use canonical asm syntax

Make code build with older tool chains.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/arch/arm/cpu/ixp/start.S b/arch/arm/cpu/ixp/start.S
index 87942cd..9f8c15b 100644
--- a/arch/arm/cpu/ixp/start.S
+++ b/arch/arm/cpu/ixp/start.S
@@ -333,7 +333,7 @@
 	mov	r1, r1, LSR #4		/* r1 <- symbol index in .dynsym */
 	add	r1, r10, r1		/* r1 <- address of symbol in table */
 	ldr	r1, [r1, #4]		/* r1 <- symbol value */
-	add	r1, r9			/* r1 <- relocated sym addr */
+	add	r1, r1, r9		/* r1 <- relocated sym addr */
 	b	fixnext
 fixrel:
 	/* relative fix: increase location by offset */