sh: intc: Use IRQ_SET_MASK_OK_NOCOPY for intc_set_affinity.

intc_set_affinity() updates the cpumask in place, so there's no need for
the upper layer to do this itself.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/drivers/sh/intc/chip.c b/drivers/sh/intc/chip.c
index d90cb7e..db10adf 100644
--- a/drivers/sh/intc/chip.c
+++ b/drivers/sh/intc/chip.c
@@ -73,7 +73,7 @@
 
 	cpumask_copy(data->affinity, cpumask);
 
-	return 0;
+	return IRQ_SET_MASK_OK_NOCOPY;
 }
 #endif