*/*: Move consumers of libebur128 to ebur128

ebur128 provides a noticable faster implementation on at least aarch64
and amd64 so make it default treewide as they conflict. If there's a
need further down the road we can add an option to choose between.

PR: 271175
Approved by: acm, jhale (maintainers of some of the ports)
Sponsored by: Blinkinblox