Fix the CPU index parameter passed to secondary_cpu_init().

Count 0,1,2,3,... instead of 0,2,3,4,...

Change-Id: I3c6b85e5e71b32deac5470809e1618d28f19c00f
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1173
Tested-by: build bot (Jenkins)
Reviewed-by: Sven Schnelle <svens@stackframe.org>

src/cpu/x86/lapic/secondary.S

@@ -41,8 +41,8 @@ _secondary_start:
 	/* increment our cpu index */
 	movl	$1, %eax
 	lock	xadd %eax, cpucount
-	incl	%eax
 	movl	%eax, %ecx
+	incl	%eax
 
 	/* assign stack for this specific cpu */
 	mov	_stack, %esp