8K resolution with V4L2 loopback

From: Hans Petter Selasky <hps_at_selasky.org>
Date: Sat, 16 Jul 2022 10:51:40 UTC
Hi,

In order to allocate a big enough frame buffer you will need to apply 
this patch, and re-build libcuse and cuse.ko. Make sure all needed 
header files in /usr/include are updated beforehand.

https://reviews.freebsd.org/D35830

--HPS