powerpc: Add printk levels to powerpc code

Add printk levels to some places in the powerpc port.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 4c5891d..8eb857f 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -444,13 +444,13 @@
 
 		cpumask_and(mask, data->affinity, map);
 		if (cpumask_any(mask) >= nr_cpu_ids) {
-			printk("Breaking affinity for irq %i\n", irq);
+			pr_warn("Breaking affinity for irq %i\n", irq);
 			cpumask_copy(mask, map);
 		}
 		if (chip->irq_set_affinity)
 			chip->irq_set_affinity(data, mask, true);
 		else if (desc->action && !(warned++))
-			printk("Cannot set affinity for irq %i\n", irq);
+			pr_err("Cannot set affinity for irq %i\n", irq);
 	}
 
 	free_cpumask_var(mask);
@@ -470,7 +470,7 @@
 
 	/* check for stack overflow: is there less than 2KB free? */
 	if (unlikely(sp < (sizeof(struct thread_info) + 2048))) {
-		printk("do_IRQ: stack overflow: %ld\n",
+		pr_err("do_IRQ: stack overflow: %ld\n",
 			sp - sizeof(struct thread_info));
 		dump_stack();
 	}