gpio: timberdale: select GPIOLIB_IRQCHIP

This driver uses gpiochip_irq_reqres() and gpiochip_irq_relres() which
are only built with GPIOLIB_IRQCHIP=y. Add the missing Kconfig select.

Fixes: 2993d2dd ("gpio: timberdale: Make irq_chip immutable")
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20250522-gpio-fix-v1-4-98ceae7c4c3c@nxp.com


Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>