[eclass] Fix function name.
[media-fonts/oxygen-fonts] Update as per upstream changes.

Upstream commits:
 - fdbdac4c9e990957005afc56cf8f16774c3402d5
 - 67fb96b5db911d91046c32233e55585845d6f8c3

Package-Manager: portage-2.2.8-r1