reference_hardware: Add iMX8MN Variscite Symphony board documentation
Related LAVA docs side https://gitlab.collabora.com/lava/docs/-/merge_requests/22/
Edited by Ariel D'Alessandro
🟠 v2026dev0 entered Soft Code Freeze/Hard Feature Freeze, only bug fixes will be accepted • schedule
Related LAVA docs side https://gitlab.collabora.com/lava/docs/-/merge_requests/22/