[SYCL][NFC][Doc] Update sycl_ext_intel_device_info backend limitations

[KseniyaTikhomirova]

SYCL_ENABLE_PCI is deprecated here 2d12863. Remove it as requirement for device info query.
Remove statement that some device info is supported on L0 only if there is at least one another backend that could return it. (mostly it is L0 +hip/cuda).

[KseniyaTikhomirova]

@intel/dpcpp-specification-reviewers
hello, could you please provide guidance - should I specify explicitly all backends where ext device info is supported now or remove it and let user check it via aspect::* query. I submitted the second option for now. Although I am ready to redo it.

[gmlueck]

@intel/dpcpp-specification-reviewers hello, could you please provide guidance - should I specify explicitly all backends where ext device info is supported now or remove it and let user check it via aspect::* query. I submitted the second option for now. Although I am ready to redo it.

It's better to take out the wording about which backend support each query. Users should check the aspect. It looks like you have mostly done this already, but there are some that you did not remove. Is there a reason these remain?

[KseniyaTikhomirova]

@intel/dpcpp-specification-reviewers hello, could you please provide guidance - should I specify explicitly all backends where ext device info is supported now or remove it and let user check it via aspect::* query. I submitted the second option for now. Although I am ready to redo it.

It's better to take out the wording about which backend support each query. Users should check the aspect. It looks like you have mostly done this already, but there are some that you did not remove. Is there a reason these remain?

Yes, I left them since they are still relevant and info is supported on L0 only. Should I left all backend mentions then?

[gmlueck]

Yes, I left them since they are still relevant and info is supported on L0 only. Should I left all backend mentions then?

Yes, it would be better to remove all mention of the backends that support each query. Applications should really use the aspects instead.

[KseniyaTikhomirova]

Yes, I left them since they are still relevant and info is supported on L0 only. Should I left all backend mentions then?

Yes, it would be better to remove all mention of the backends that support each query. Applications should really use the aspects instead.

done in 0620cdb