[PATCH] mfd: cs42l43: add REGMAP_IRQ requirement

[Randy Dunlap]

The cs42l43 core uses devm_regmap_add_irq_chip(), so add REGMAP_IRQ
to what the core driver selects in order to provide this API.
This fixes a build error:

aarch64-linux-ld: drivers/mfd/cs42l43.o: in function `cs42l43_boot_work':
cs42l43.c:(.text+0x19d4): undefined reference to `devm_regmap_add_irq_chip'

Fixes: ace6d1448138 ("mfd: cs42l43: Add support for cs42l43 core driver")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Cc: James Schulman <james.schulman@xxxxxxxxxx>
Cc: David Rhodes <david.rhodes@xxxxxxxxxx>
Cc: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>
Cc: alsa-devel@xxxxxxxxxxxxxxxx
Cc: patches@xxxxxxxxxxxxxxxxxxxxx
Cc: Lee Jones <lee@xxxxxxxxxx>
---
 drivers/mfd/Kconfig |    1 +
 1 file changed, 1 insertion(+)

diff -- a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -241,6 +241,7 @@ config MFD_CS42L43
 	tristate
 	select MFD_CORE
 	select REGMAP
+	select REGMAP_IRQ
 
 config MFD_CS42L43_I2C
 	tristate "Cirrus Logic CS42L43 (I2C)"