Beaglebone Black/Green/Blue support (volunteering)

Hello all,

I have a number of these boards and really prefer them to any Pi-thing 
when I need to throw them out into the field to monitor or control things.

It was mentioned that support for armv7 was being dropped (or at least 
it was a consideration) in the current version(s) of FreeBSD. I've built 
12.4 and have it running on a BBG; I'm currently building 13.4 to see 
where it breaks -- I've been told moving to current would be the best 
way to "revive" support for this board.

I'd like to do what I can to help keep them included as a viable and 
supported platform.

Bare-metal/VxWorks/FreeRTOS C coder by day, so the real challenge is 
learning the build environment. Not many hours/wk to dedicate to it, but 
I'll do what I'm able.

Thanks to FUZxx on freebsd.dev for pointing out this list.

--- Zach
(__sbrk)