iio: accel: fxls8962af: select IIO_BUFFER & IIO_KFIFO_BUF

Provide missing symbols to the module:
ERROR: modpost: iio_push_to_buffers [drivers/iio/accel/fxls8962af-core.ko] undefined!
ERROR: modpost: devm_iio_kfifo_buffer_setup_ext [drivers/iio/accel/fxls8962af-core.ko] undefined!

Cc: [email protected]
Fixes: 79e3a5b ("iio: accel: fxls8962af: add hw buffered sampling")
Signed-off-by: Alexander Sverdlin <[email protected]>
Reviewed-by: Sean Nyekjaer <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>

Author: ccpalex

drivers/iio/accel/Kconfig

@@ -330,6 +330,8 @@ config DMARD10
 config FXLS8962AF
 	tristate
 	depends on I2C || !I2C # cannot be built-in for modular I2C
+	select IIO_BUFFER
+	select IIO_KFIFO_BUF
 
 config FXLS8962AF_I2C
 	tristate "NXP FXLS8962AF/FXLS8964AF Accelerometer I2C Driver"