gpiolib: Consolidate chained IRQ handler install/remove

Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.

Search and conversion was done with coccinelle:

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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

drivers/gpio/gpiolib.c

@@ -443,8 +443,8 @@ void gpiochip_set_chained_irqchip(struct gpio_chip *gpiochip,
 		 * The parent irqchip is already using the chip_data for this
 		 * irqchip, so our callbacks simply use the handler_data.
 		 */
-		irq_set_handler_data(parent_irq, gpiochip);
-		irq_set_chained_handler(parent_irq, parent_handler);
+		irq_set_chained_handler_and_data(parent_irq, parent_handler,
+						 gpiochip);
 
 		gpiochip->irq_parent = parent_irq;
 	}