x86: revert printk format warning change which is for linux-next

commit 6217984
    x86: fix setup printk format warning

is for linux-next and not for .26

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/setup.c

@@ -95,7 +95,7 @@ void __init setup_per_cpu_areas(void)
 
 	/* Copy section for each CPU (we discard the original) */
 	size = PERCPU_ENOUGH_ROOM;
-	printk(KERN_INFO "PERCPU: Allocating %zd bytes of per cpu data\n",
+	printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n",
 			  size);
 
 	for_each_possible_cpu(i) {