A/D converter lines

How to enable the A/D converter Kernel modules

Inside the make menuconfig set these flags then save and generate a new kernel image.

Device Drivers  ---> 
    <*> Industrial I/O support  ---> 
        <*> Enable software IIO device support 
        <*> Enable software triggers support
        Analog to digital converters  --->
            <*> Atmel AT91 ADC
            <*> Atmel AT91 SAMA5D2 ADC