add changes from 'd4639ebadb758219ccef97d1f37c0ac44c53de5a' Merge branch 'drm-fixes-3.11' of git://people.freedesktop.org/~agd5f/linux ... to '444bddc4b9b3313a562cd3ba40f780fb82570f7d' drm/radeon/dpm: add debugfs support for RS780/RS880 (v3)