ARM Support

[orangana]

This time? Maybe? ;)

Context:

17.1: https://forum.opnsense.org/index.php?topic=2441
18.1: https://forum.opnsense.org/index.php?topic=7741
19.1: https://forum.opnsense.org/index.php?topic=10937
20.1:  :-X
21.1: https://forum.opnsense.org/index.php?topic=21551
22.1: to be continued

Soon I can start to ask for RISC V support  ;D