[PATCH] iio: chemical: select IRQ_WORK for ATLAS ph sensor

[Arnd Bergmann]

The newly added atlas-ph-sensor driver uses irq_work_queue, which
may not always be enabled:

ERROR: "irq_work_queue" [drivers/iio/chemical/atlas-ph-sensor.ko] undefined!

This adds a 'select' statement to Kconfig to ensure it's there
when we need it.

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Fixes: 27dec00ecf2d ("iio: chemical: add Atlas pH-SM sensor support")

diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig
index ce7cd1370f74..f73290f84c90 100644
--- a/drivers/iio/chemical/Kconfig
+++ b/drivers/iio/chemical/Kconfig
@@ -10,6 +10,7 @@ config ATLAS_PH_SENSOR
 	select REGMAP_I2C
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
+	select IRQ_WORK
 	help
 	 Say Y here to build I2C interface support for the Atlas
 	 Scientific OEM pH-SM sensor.