drm/qxl: rework to new fence interface

Final driver! \o/

This is not a proper dma_fence because the hardware may never signal
anything, so don't use dma-buf with qxl, ever.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>

diff --cc drivers/gpu/drm/qxl/Makefile
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_cmd.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_debugfs.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_drv.h
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_fence.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_kms.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_object.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_release.c
Simple merge

diff --cc drivers/gpu/drm/qxl/qxl_ttm.c
Simple merge