gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres

The driver now uses the generic request/release callbacks, so the custom
ones are no longer called. When building with -Woverride-init, gcc produces
a warning about the duplicate entries:

In file included from drivers/gpio/gpio-zynq.c:10:
include/linux/gpio/driver.h:621:43: error: initialized field overwritten [-Werror=override-init]
621 | .irq_request_resources = gpiochip_irq_reqres, \
| ^~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-zynq.c:611:9: note: in expansion of macro 'GPIOCHIP_IRQ_RESOURCE_HELPERS'
611 | GPIOCHIP_IRQ_RESOURCE_HELPERS,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/gpio/driver.h:621:43: note: (near initialization for 'zynq_gpio_level_irqchip.irq_request_resources')
621 | .irq_request_resources = gpiochip_irq_reqres, \
| ^~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-zynq.c:625:9: note: in expansion of macro 'GPIOCHIP_IRQ_RESOURCE_HELPERS'
625 | GPIOCHIP_IRQ_RESOURCE_HELPERS,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/gpio/driver.h:622:43: error: initialized field overwritten [-Werror=override-init]
622 | .irq_release_resources = gpiochip_irq_relres
| ^~~~~~~~~~~~~~~~~~~

Removing the old ones has no effect on the driver but avoids the warnings.

Fixes: f569143935378 ("gpio: zynq: fix zynqmp_gpio not an immutable chip warning")
Signed-off-by: Arnd Bergmann <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-zynq.c

···
 	return 0;
 }
 
-static int zynq_gpio_irq_reqres(struct irq_data *d)
-{
-	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
-	int ret;
-
-	ret = pm_runtime_resume_and_get(chip->parent);
-	if (ret < 0)
-		return ret;
-
-	return gpiochip_reqres_irq(chip, d->hwirq);
-}
-
-static void zynq_gpio_irq_relres(struct irq_data *d)
-{
-	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
-
-	gpiochip_relres_irq(chip, d->hwirq);
-	pm_runtime_put(chip->parent);
-}
-
 /* irq chip descriptor */
 static const struct irq_chip zynq_gpio_level_irqchip = {
 	.name		= DRIVER_NAME,
···
 	.irq_unmask	= zynq_gpio_irq_unmask,
 	.irq_set_type	= zynq_gpio_set_irq_type,
 	.irq_set_wake	= zynq_gpio_set_wake,
-	.irq_request_resources = zynq_gpio_irq_reqres,
-	.irq_release_resources = zynq_gpio_irq_relres,
 	.flags		= IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED |
 			  IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
···
 	.irq_unmask	= zynq_gpio_irq_unmask,
 	.irq_set_type	= zynq_gpio_set_irq_type,
 	.irq_set_wake	= zynq_gpio_set_wake,
-	.irq_request_resources = zynq_gpio_irq_reqres,
-	.irq_release_resources = zynq_gpio_irq_relres,
 	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };