Merge drm/drm-next into drm-misc-next

Backmerging into drm-misc-next to get commit 2c1c7ba4
("drm/amdgpu: support partition drm devices"), which is required to fix
commit 0adec227 ("drm: Remove struct drm_driver.gem_prime_mmap").

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>