ARM: configs: lpc18xx: enable adc and dac iio drivers

Enable ADC and DAC IIO drivers for LPC18xx/43xx SoCs.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/configs/lpc18xx_defconfig

@@ -149,6 +149,8 @@ CONFIG_PWM=y
 CONFIG_PWM_LPC18XX_SCT=y
 CONFIG_IIO=y
 CONFIG_MMA7455_I2C=y
+CONFIG_LPC18XX_ADC=y
+CONFIG_LPC18XX_DAC=y
 CONFIG_IIO_SYSFS_TRIGGER=y
 CONFIG_PHY_LPC18XX_USB_OTG=y
 CONFIG_NVMEM=y