powerpc/irq: Convert obsolete irq_desc_t to struct irq_desc

Impact: cleanup

Convert the last remaining users.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: linuxppc-dev@ozlabs.org
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/kernel/irq.c

@@ -171,7 +171,7 @@ int show_interrupts(struct seq_file *p, void *v)
 {
 	int i = *(loff_t *)v, j;
 	struct irqaction *action;
-	irq_desc_t *desc;
+	struct irq_desc *desc;
 	unsigned long flags;
 
 	if (i == 0) {
@@ -1038,7 +1038,7 @@ arch_initcall(irq_late_init);
 static int virq_debug_show(struct seq_file *m, void *private)
 {
 	unsigned long flags;
-	irq_desc_t *desc;
+	struct irq_desc *desc;
 	const char *p;
 	char none[] = "none";
 	int i;

arch/powerpc/platforms/iseries/irq.c

@@ -214,7 +214,7 @@ void __init iSeries_activate_IRQs()
 	unsigned long flags;
 
 	for_each_irq (irq) {
-		irq_desc_t *desc = get_irq_desc(irq);
+		struct irq_desc *desc = get_irq_desc(irq);
 
 		if (desc && desc->chip && desc->chip->startup) {
 			spin_lock_irqsave(&desc->lock, flags);