sh: intc: Prefer IRQCHIP_SKIP_SET_WAKE over a dummy set_wake callback.

It's possible to use IRQCHIP_SKIP_SET_WAKE to get the behaviour that
we're after, without having to bother with a dummy ->set_wake() callback
for the IRQ chip.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/sh/intc/chip.c b/drivers/sh/intc/chip.c
index 7b246ef..3679645 100644
--- a/drivers/sh/intc/chip.c
+++ b/drivers/sh/intc/chip.c
@@ -58,11 +58,6 @@
 	}
 }
 
-static int intc_set_wake(struct irq_data *data, unsigned int on)
-{
-	return 0; /* allow wakeup, but setup hardware in intc_suspend() */
-}
-
 #ifdef CONFIG_SMP
 /*
  * This is held with the irq desc lock held, so we don't require any
@@ -225,8 +220,8 @@
 	.irq_disable		= intc_disable,
 	.irq_shutdown		= intc_disable,
 	.irq_set_type		= intc_set_type,
-	.irq_set_wake		= intc_set_wake,
 #ifdef CONFIG_SMP
 	.irq_set_affinity	= intc_set_affinity,
 #endif
+	.flags			= IRQCHIP_SKIP_SET_WAKE,
 };