[PATCH] drm/i915: change i915_sw_fence license to MIT

[Chris Wilson]

Quoting Jonathan Gray (2018-10-31 00:56:12)
> Chris Wilson said Intel is willing to change the license of these files
> to MIT.
> 
> Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris