[libkwineffects] Detect modern Radeon GPUs
Summary:
Currently, KWin is not able to detect Radeon GPUs with GCN architecture.
This patch tries to address that.
Reviewers: KWin, graesslin
Reviewed By: KWin, graesslin
Subscribers: graesslin, kwin
Tags: KWin
Differential Revision: https://phabricator.kde.org/D17715