Change x11/xorgproto to become a build dep

Change x11/xorgproto to become a build time dependency when added to
USE_XORG. Change the dependency to be on the port, rather than a file the
port installs.
Fix fallout.
Bump portrevision on depending ports.

PR: 230909
Reviewed by: eadler
Approved by: portmgr (antoine)
Obtained from: https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/xorgproto
exp-run: antoine
Differential Revision: https://reviews.freebsd.org/D16906