amd-drm-fixes-5.7-2020-05-13

amdgpu:
- Clockgating fixes
- Fix fbdev with scatter/gather display
- S4 fix for navi
- Soft recovery for gfx10
- Freesync fixes
- Atomic check cursor fix
- Add a gfxoff quirk
- MST fix

amdkfd:
- Fix GEM reference counting