[xorg-x11-drv-nvidia/f28] (6 commits) ...Update to 390.48 release

Summary of changes: 0293d8c... Add conditionals, RHEL has no Suggests (*) 4bf52ce... Fix el7 build (*) 9c40296... Update contact (*) 1d54ce1... Revert "Fix el7 build" (*) 697c040... Use a better fix el7 build (*) 6de9936... Update to 390.48 release (*) (*) This commit already existed in another branch; no separate mail sent