Merge branch 'topic/core-stuff' into topic/atomic-core

Backmerge my drm-misc branch because of conflicts. Just simple stuff
but better to clear this out before I merge the other atomic patches.

Conflicts:
drivers/gpu/drm/drm_crtc.c
drivers/gpu/drm/drm_edid.c

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>