gpio/ep93xx: Use irq_set_handler_locked()

Use irq_set_handler_locked() as it avoids a redundant lookup of the
irq descriptor.

Search and replacement was done with coccinelle:

@@
struct irq_data *d;
expression E1;
@@

-__irq_set_handler_locked(d->irq, E1);
+irq_set_handler_locked(d, E1);

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: linux-gpio@vger.kernel.org
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 45684f3..8664cf0 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c
@@ -208,7 +208,7 @@
 		return -EINVAL;
 	}
 
-	__irq_set_handler_locked(d->irq, handler);
+	irq_set_handler_locked(d, handler);
 
 	gpio_int_enabled[port] |= port_mask;