Update the recommended package.

[imp]

Summary

The messaging around which drm port to install has been
simplified. The new pkg to install is drm-kmod. This meta-port will
install the right drm port for your FreeBSD version / architecture
combination.

[zeising]

sys/dev/drm/drm.h

1148 ↗

(On Diff #48834)

The drivers in sys/dev/drm are very old, and drm-stable/next/devel-kmod does not support them. the drm-kmod does not take this into account, and on amd64 (why on earth would you run these on amd64?) this would install the wrong things.
I'm not sure what's best here, changing the message to have unity between the drm drivers in base, or leave this as is.

[imp]

sys/dev/drm/drm.h

1148 ↗

(On Diff #48834)

For drm drivers, I can have it be drm-legacy-kmod still. That may be best.