gpio: tb10x: GPIO_TB10X needs to select GENERIC_IRQ_CHIP

gpio-tb10x driver uses generic irq chip APIs (irq_alloc_domain_generic_chips,
irq_remove_generic_chip), so it needs to select GENERIC_IRQ_CHIP to avoid build
error.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 6973387..903f24d 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -403,6 +403,7 @@
 
 config GPIO_TB10X
 	bool
+	select GENERIC_IRQ_CHIP
 	select OF_GPIO
 
 comment "I2C GPIO expanders:"