Add missing affinity domains

[FranklandJack]

Add missing cache affinity domains to device affinity domains
enumeration. Fixes #115.

[veselypeta]

LGTM

[FranklandJack]

This might be worth reconsidering.

Looking at the usage of PI_DEVICE_AFFINITY_DOMAIN_L(1|2|3|4)_CACHE none of the adaptors actually handle these enumeration values, so although they would be required replace the usage in the DPC++ codebase as is, perhaps they aren't really needed by the DPC++ codebase to begin with unless there are out of tree adapters using them?

[kbenzie]

... perhaps they aren't really needed by the DPC++ codebase to begin with unless there are out of tree adapters using them?

Does make me wonder if we should hold off making this change then.

[FranklandJack]

... perhaps they aren't really needed by the DPC++ codebase to begin with unless there are out of tree adapters using them?

Does make me wonder if we should hold off making this change then.

Yeah I think so, this may be true of other missing PI features. But it would be useful to get confirmation from engineers who are familiar with that codebase.

[FranklandJack]

I'm closing this since there is a question of if it is actually required.