drivers: gpio_stm32: Add gpio_driver_data to driver data

Add gpio_driver_data as the first element in the driver data as the gpio
core expects this.

Signed-off-by: Kumar Gala <[email protected]>

Author: galak

drivers/gpio/gpio_stm32.h

@@ -188,6 +188,8 @@ struct gpio_stm32_config {
  * @brief driver data
  */
 struct gpio_stm32_data {
+	/* gpio_driver_data needs to be first */
+	struct gpio_driver_data common;
 	/* Enabled INT pins generating a cb */
 	u32_t cb_pins;
 	/* user ISR cb */