input devices after xorg update

[wolfgang at lyxys.ka.sub.org]

Hi,

after taking quite a while to get a working x11 back, here's what
I learned: if you build everything from ports, it is important to
revisit the configured options on your x11 related ports. You need to
enable the libinput driver and on FreeBSD 12 or newer switch xorg-server
to using udev. While this is now default, your stored build options
might be different.

For everyone using non-default keyboard layouts, configured as in
section 5.4.7.1 of the FreeBSD handbook: you now need to use the
"libinput" driver instead of "keyboard". Otherwise the keyboard
module gets loaded in addition to the libinput module, resulting in
both talking to the keyboard and rendering it unusable.

Wolfgang