Blender Git Loki

Fix T80477: Crash when rendering with Embree but denoising with OptiX

Commit 009971ba7adc9603b90e9bf99b6b6d53eeae6c3a changed it so Cycles creates a separate
Embree device for each Cycles device, but missed the multi-device case. A multi-device with
Embree BVH can occur when CPU rendering is used with OptiX denoising and BVH creation then
failed to get a valid pointer to the Embree device, which crashed. This fixes that by providing the
correct device pointer in the multi-device case as well.