drivers: misc: mcux_flexio: Set the DOZEN bit

Setting the DOZEN bit in the flexio so the soc
does not force the peripheral to go into
low power mode when the soc is in idle.

Signed-off-by: Emilio Benavente <emilio.benavente@nxp.com>

drivers/misc/mcux_flexio/mcux_flexio.c

@@ -132,6 +132,8 @@ static int mcux_flexio_init(const struct device *dev)
 	k_mutex_init(&data->lock);
 
 	FLEXIO_GetDefaultConfig(&flexio_config);
+	flexio_config.enableInDoze = true;
+
 	FLEXIO_Init(config->base, &flexio_config);
 	config->irq_config_func(dev);