iio: adc: ad7944: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig

This driver makes use of triggered buffers, but does not select the
required modules.

Add the missing 'select IIO_BUFFER' and 'select IIO_TRIGGERED_BUFFER'.

Fixes: d1efcf8 ("iio: adc: ad7944: add driver for AD7944/AD7985/AD7986")
Signed-off-by: Javier Carrasco <[email protected]>
Reviewed-by: David Lechner <[email protected]>
Link: https://patch.msgid.link/[email protected]
Cc: <[email protected]>
Signed-off-by: Jonathan Cameron <[email protected]>

Author: javiercarrascocruz

drivers/iio/adc/Kconfig

@@ -328,6 +328,8 @@ config AD7923
 config AD7944
 	tristate "Analog Devices AD7944 and similar ADCs driver"
 	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Analog Devices
 	  AD7944, AD7985, AD7986 ADCs.