Heads up for breaking drm update.

[Johannes Lundberg]

Hi

Cross posting to -current and -x11.

LinuxKPI in base have received a lot of updates recently for Linux 5.0,
a couple of them will break drm-current-kmod. So, as of r347973 you will
need drm-current-kmod 4.16.g20190519. Ports have been updated and new
packages should be available shortly.

A drm-???-kmod port for 5.0 drivers will be created as soon as we fixed
a pretty serious vm page cache memory leak (limited to 5.0 code in
ports). Once 5.0 is regarded stable, it will replace the 4.16 as default
for -CURRENT (and future 12.1) (rejoice Vega graphics users:))

Until then, feel free to test with r347973+ and
https://github.com/FreeBSDDesktop/kms-drm/tree/drm-v5.0

Cheers!