[GPU] Enable Xe2 in oneDNN build

[petercad]

OpenVINO selectively enables GPU ISAs when building oneDNN; this PR adds Xe2 to the list.

[sshlyapn]

@petercad thank you for the PR!

But currently, all CI jobs failed with "Unsupported primitive GPU ISA" error message. The issue appears because oneDNN submodule version hasn’t been updated yet, and this #24411 PR should be merged first

[petercad]

@sshlyapn Yes, was wondering about that (I was testing with oneDNN v3.5 of course). Feel free to merge this patch into #24411 and close this PR if you'd like.

[isanghao]

Let me close this PR as the content will be included in #24411

Note: 24411 is picking onednn main branch at this moment because rls-3.5 is not in public onednn repo. 24411 will change rls-3.5 branch once the branch is published.