Enabled in Fedora git. It will be contained in the next build done.
kernel-4.0.0-1.fc22 has been submitted as an update for Fedora 22. https://admin.fedoraproject.org/updates/kernel-4.0.0-1.fc22
kernel-4.0.0-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.