gpio: mlxbf2: select GPIOLIB_IRQCHIP

This driver uncondictionally uses the GPIOLIB_IRQCHIP so
select it.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

drivers/gpio/Kconfig

@@ -1531,6 +1531,7 @@ config GPIO_MLXBF2
 	tristate "Mellanox BlueField 2 SoC GPIO"
 	depends on (MELLANOX_PLATFORM && ARM64 && ACPI) || (64BIT && COMPILE_TEST)
 	select GPIO_GENERIC
+	select GPIOLIB_IRQCHIP
 	help
 	  Say Y here if you want GPIO support on Mellanox BlueField 2 SoC.