Merge tag 'drm-misc-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Second pull request for v4.19:
- Fix ulong overflow in sun4i
- Fix a serious GPF in waiting for flip_done from commit_tail().

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/97d1ed42-1d99-fcc5-291e-cd1dc29a4252@linux.intel.com