[PATCH] gpio: sifive: select IRQ_DOMAIN_HIERARCHY rather than depend on it

[Randy Dunlap <rdunlap@xxxxxxxxxxxxx>]

This is the only driver in the kernel source tree that depends on
IRQ_DOMAIN_HIERARCHY instead of selecting it. Since it is not a
visible Kconfig symbol, depending on it (expecting a user to
set/enable it) doesn't make much sense, so change it to select
instead of "depends on".

Fixes: 96868dce644d ("gpio/sifive: Add GPIO driver for SiFive SoCs")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>
Cc: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
Cc: linux-gpio@xxxxxxxxxxxxxxx
Cc: Thierry Reding <treding@xxxxxxxxxx>
Cc: Greentime Hu <greentime.hu@xxxxxxxxxx>
Cc: Yash Shah <yash.shah@xxxxxxxxxx>
---
 drivers/gpio/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- linux-next-20210118.orig/drivers/gpio/Kconfig
+++ linux-next-20210118/drivers/gpio/Kconfig
@@ -521,7 +521,8 @@ config GPIO_SAMA5D2_PIOBU
 
 config GPIO_SIFIVE
 	bool "SiFive GPIO support"
-	depends on OF_GPIO && IRQ_DOMAIN_HIERARCHY
+	depends on OF_GPIO
+	select IRQ_DOMAIN_HIERARCHY
 	select GPIO_GENERIC
 	select GPIOLIB_IRQCHIP
 	select REGMAP_MMIO