Merge drm/drm-next into drm-intel-next-queued

Get the HDR dependencies originally merged via drm-misc. Sync up all
i915 changes applied via other trees. And get v5.2-rc2 as the baseline.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

diff --cc drivers/gpu/drm/i915/i915_gem.c
Simple merge

diff --cc drivers/gpu/drm/i915/intel_display.c
Simple merge