Merge branch 'linux-4.21' of git://github.com/skeggsb/linux into drm-fixes

3 nouveau fixes:
one backlight, falcon register access, and a fan fix.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Ben Skeggs <skeggsb@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CACAvsv4MHr=Rq3FkZFTYWPc7o5-dTWFysXB=wN2L91SYeFbzkQ@mail.gmail.com