drm-misc-next for 4.20:

UAPI Changes:
- Add userspace dma-buf device to turn memfd regions into dma-bufs (Gerd)

Cross-subsystem Changes:
- None

Core Changes:
- Remove user logspam and useless lock in vma_offset_mgr destroy (Chris)

Driver Changes:
- various: fbdev: Wrap remove_conflicting_framebuffers with resource_len
                  accessors to remove a bunch of cargo-cult (Michał)
- rockchip: Add rgb output iface support + fixes (Sandy/Heiko)
- nouveau/amdgpu: Add cec-over-aux support (Hans)
- sun4i: Add support for Allwinner A64 (Jagan)

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
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