[PATCH] regulator: mt6363: select CONFIG_IRQ_DOMAIN

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

When build-testing this driver without CONFIG_IRQ_DOMAIN causes
a compile-time error:

drivers/regulator/mt6363-regulator.c: In function 'mt6363_regulator_probe':
drivers/regulator/mt6363-regulator.c:884:18: error: implicit declaration of function 'irq_find_host' [-Wimplicit-function-declaration]
  884 |         domain = irq_find_host(interrupt_parent);
      |                  ^~~~~~~~~~~~~
drivers/regulator/mt6363-regulator.c:884:16: error: assignment to 'struct irq_domain *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
  884 |         domain = irq_find_host(interrupt_parent);
      |                ^
drivers/regulator/mt6363-regulator.c:896:30: error: implicit declaration of function 'irq_create_fwspec_mapping'; did you mean 'irq_create_of_mapping'? [-Wimplicit-function-declaration]
  896 |                 info->virq = irq_create_fwspec_mapping(&fwspec);
      |                              ^~~~~~~~~~~~~~~~~~~~~~~~~
      |                              irq_create_of_mapping

This is rather hard to trigger because so many other drivers
enable IRQ_DOMAIN already, but I ran into this on an s390
randconfig build.

Ensure this is always enabled using a Kconfig 'select IRQ_DOMAIN'
entry, as we do for all other users of this.

Fixes: 3c36965df808 ("regulator: Add support for MediaTek MT6363 SPMI PMIC Regulators")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/regulator/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index dccb72efe8ec..2c7cdc8dca36 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -979,6 +979,7 @@ config REGULATOR_MT6363
 	tristate "MT6363 SPMI PMIC regulator driver"
 	depends on SPMI
 	select REGMAP_SPMI
+	select IRQ_DOMAIN
 	help
 	  Say Y here to enable support for regulators found in the MediaTek
 	  MT6363 SPMI PMIC.
-- 
2.39.5