Board Definition

SigCell board definition can be obtained from Signetik git:

https://github.com/Signetik/fw-nrfconnect-zephyr/tree/feature/signetik-cellular

The most recent branch will be here:

https://github.com/Signetik/fw-nrfconnect-zephyr/tree/signetik-develop/boards/arm/signetik_iot

Depending on your nRF release version, you may be able to copy the signetik_iot folder into boards/arm/ of Zephyr and add board support to your development setup.