[PATCH 1/3] extcon: max8997: select IRQ_DOMAIN instead of depending on it

[Randy Dunlap <rdunlap@infradead.org>]

IRQ_DOMAIN is a hidden (not user visible) symbol. Users cannot set
it directly thru "make *config", so drivers should select it instead
of depending on it if they need it.
Relying on it being set for a dependency is risky.

Consistently using "select" or "depends on" can also help reduce
Kconfig circular dependency issues.

Therefore, change EXTCON_MAX8997's use of "depends on" for
IRQ_DOMAIN to "select".

Fixes: dca1a71e4108 ("extcon: Add support irq domain for MAX8997 muic")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Donggeun Kim <dg77.kim@samsung.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Peter Rosin <peda@axentia.se>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
I have a similar patch (should be a series) for REGMAP.

 drivers/extcon/Kconfig |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -- a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -115,7 +115,8 @@ config EXTCON_MAX77843
 
 config EXTCON_MAX8997
 	tristate "Maxim MAX8997 EXTCON Support"
-	depends on MFD_MAX8997 && IRQ_DOMAIN
+	depends on MFD_MAX8997
+	select IRQ_DOMAIN
 	help
 	  If you say yes here you get support for the MUIC device of
 	  Maxim MAX8997 PMIC. The MAX8997 MUIC is a USB port accessory