[Intel-gfx] [PATCH 27/41] drm/i915: Restore nonblocking awaits for modesetting

After combining the dma-buf reservation object and the GEM reservation object, we lost the ability to do a nonblocking wait on the i915 request (as we blocked upon the reservation object during prepare_fb). We can instead convert the reservation object into a fence upon which we can asynchronously

[Intel-gfx] [PATCH 27/41] drm/i915: Restore nonblocking awaits for modesetting

After combining the dma-buf reservation object and the GEM reservation object, we lost the ability to do a nonblocking wait on the i915 request (as we blocked upon the reservation object during prepare_fb). We can instead convert the reservation object into a fence upon which we can asynchronously