Which should be used, devel/evdev-proto or /usr/include/dev/evdev?

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I found evdev-proto, which includes linux/input.h, was added a few
months ago. It seems that many ports has been gradually switched to use
it after it was added. However, I also remember there was a patch in
ports to modify GTK3 to use dev/evdev/input.h from base instead of
linux/input.h from ports. I wonder which one should be preferred now.

The GTK3 patch mentioned above was added about a year ago:
https://svnweb.freebsd.org/changeset/ports/465644

After seeing the patch in ports, I submitted it to GTK upstream:
https://gitlab.gnome.org/GNOME/gtk/merge_requests/132
https://gitlab.gnome.org/GNOME/gtk/merge_requests/133

Since software supporting Wayland are likely to require linux/input.h,
is there a policy on dealing with the dependency on linux/input.h? It
seems to me that evdev-proto was added specifically to address the
issue, so I guess we should just install evdev-proto, stop patching
linux/input.h to dev/evdev/input.h, stop submitting this kind of patch
to upstream projects and tell upstream it is fine to use linux/input.h
on FreeBSD. Is it correct?