recreate FreeBSD 12 ARM image

[Stefan Parvu]

Thanks for message. 

What I meant was this:

 * original ARMv8 FreeBSD 12.0 RELEASE is 2 684 354 560 bytes (2.69 GB on disk) not
compressed 

 * if I install the image on a 32GB MicroSD card I would love to make back the FreeBSD 
image to something as close as possible to the original size (of course except what I install
additional) 

 * yes, idea is to offer the FreeBSD 12 to our customers pre-packaged and ready to be used for 
analytics and data recording  

 * I want our customers would install the img on their own MicroSD cards … 


See what I mean ?

Thanks,
Stefan