Merge branch 'linux-5.4' of git://github.com/skeggsb/linux into drm-next

This is mostly just the stuff I missed last round.  Various cleanup
patches + fixes, improvements to display colour management, and some
code to avoid loading when power cables aren't properly attached.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv7hqj9_VHq+YiGL8Z8XsU2vPbqbNPC=LeN1Rb0XxMQypQ@mail.gmail.com