The private gem_create_mmap_offset() function is now implemented in the
DRM core as drm_gem_create_mmap_offset(). Use it and kill the private
copy.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>