Merge branch 'drm-fixes-4.19' of git://people.freedesktop.org/~agd5f/linux into drm...

- Fix an ordering issue in DC with respect to atomic flips that could result
  in a crash
- Fix incorrect use of process->mm in KFD

Signed-off-by: Dave Airlie <[email protected]>
From: Alex Deucher <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]