Brax3 port still in progress

[Vlad Nirky]

[Keneda]

@Vlad-Nirky
If you're the porter, please check there to comply to the requirements :
https://forums.ubports.com/topic/4328/qa-checklist-for-ported-devices

If you're not, please understand porting section is not for informing about how ports are going, thus I moved topic.

[Vlad Nirky]

@Keneda
This was to inform about this porting.
Thanks for the move.