Blender Git Loki

Fix Cycles X multi-device type generation

The info type can not be set to first device type because the device
might be ignored. So delay type assignment until we have a device which
is known to be used.

Fixes issue in viewport when OptiX+OptiX will be considered an OptiX
device with 2 sub-devices, and OptiX+OptiX+CPU will be considered a
Multi device. The issue with the latter one is that the info IDs in
both cases are the same, but not the type, making it a wrong comparison
in `DeviceInfo::operator==`.

Differential Revision: https://developer.blender.org/D11729