sh: sdk7786-gpio: switch to gpiochip_add_data()

We're planning to remove the gpiochip_add() function to swith
to gpiochip_add_data() with NULL for data argument.

Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/sh/boards/mach-sdk7786/gpio.c

@@ -9,7 +9,7 @@
  */
 #include <linux/init.h>
 #include <linux/interrupt.h>
-#include <linux/gpio.h>
+#include <linux/gpio/driver.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
@@ -44,6 +44,6 @@ static struct gpio_chip usrgpir_gpio_chip = {
 
 static int __init usrgpir_gpio_setup(void)
 {
-	return gpiochip_add(&usrgpir_gpio_chip);
+	return gpiochip_add_data(&usrgpir_gpio_chip, NULL);
 }
 device_initcall(usrgpir_gpio_setup);