pinctrl: stm32: Optimizes and enhances stm32gpio irqchip

- removes unneeded irq_chip.irq_eoi callback
- adds irq_chip.irq_set_wake callback for possible
  in the future GPIO wakeup
- adds irq_chip.irq_ack callback

Signed-off-by: Radoslaw Pietrzyk <radoslaw.pietrzyk@gmail.com>
Reviewed-by: Ludovic Barre <ludovic.barre@st.com>
Tested-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/stm32/pinctrl-stm32.c

@@ -268,10 +268,11 @@ static void stm32_gpio_irq_release_resources(struct irq_data *irq_data)
 
 static struct irq_chip stm32_gpio_irq_chip = {
 	.name           = "stm32gpio",
-	.irq_eoi	= irq_chip_eoi_parent,
+	.irq_ack       = irq_chip_ack_parent,
 	.irq_mask       = irq_chip_mask_parent,
 	.irq_unmask     = irq_chip_unmask_parent,
 	.irq_set_type   = irq_chip_set_type_parent,
+	.irq_set_wake   = irq_chip_set_wake_parent,
 	.irq_request_resources = stm32_gpio_irq_request_resources,
 	.irq_release_resources = stm32_gpio_irq_release_resources,
 };