[SYCL] test update: support single tile PVC

[cperkinsintel]

A few of our tests assume that a given PVC installation always has multiple tiles available, which is not true. Putting appropriate guards into those tests.

[kbenzie]

I'm wondering if the code-owner for files should be the L0 team? I believe the intent of UR team being made code-owner for this test directory is that it would eventually be superceeded by UR testing but I'm not sure if that makes sense for these tests or not?

[aelovikov-intel]

I'm wondering if the code-owner for files should be the L0 team? I believe the intent of UR team being made code-owner for this test directory is that it would eventually be superceeded by UR testing but I'm not sure if that makes sense for these tests or not?

When the feature was first implemented, most of the logic was in plugins/level_zero/pi_level_zero.cpp (https://github.com/intel/llvm/pull/7626/files#diff-15dd1eb076d2164bd9e87d9057f05f652a716498e8cdf5975e564c65309a0985). I believe that that code belongs to UR and as such the test should be owned by it.

[cperkinsintel]

closing in favor of https://github.com/intel/llvm/pull/13067