[SYCL][E2E] Enable llvm-lit to select spercific numbered device

[DBDuncan]

Allow for selection of a specific device via the style level_zero:0 when running sycl E2E tests via llvm-lit.
Fixes an issue that can occur where multiple devices on a machine of the same platform have different supported aspects and llvm-lit only returns aspects as supported that are available on all devices of the same platform.

[aelovikov-intel]

What problem are you trying to solve? Empty PR description and no comments in the change don't help to understand the idea behind this.

[DBDuncan]

Ah sorry. You are right. The issue is that on devices with say a battlemage GPU and an intel intergrated iGPU, when running llvm-lit with --param sycl_devices="level_zero:gpu" set, when sycl/test-e2e/lit.cfg.py is sorting out which aspects are enabled, it only signals aspects as supported to // REQUIRES: aspect- that are supported on all intel devices listed via level_zero:gpu from sycl-ls.

This is a problem with bindless images as the aspect exp_oneapi_bindless_images is not supported on intel iGPUs, but even if the tests are running on a supported device because that device comes first in the list it will not run them because the aspect in tests returns the feature as unsupported.

Currently, sycl/test-e2e/lit.cfg.py does not support the level_zero:0/1/2/etc device selection style which would fix this issue. So patch intends to fix this allowing for explicit selection for the device, not just platform and device type.

[aelovikov-intel]

First, that should go to the PR description, not the comment. Second, please add an example usage, e.g., sycl-ls shows this, we run llvm-lit like that, and it does the following (and print detected aspects from its output).