[CPU] Disable oneDNN linear on non-x86 platforms

[bigPYJ1151]

Purpose

• Noticed some issues about recently added oneDNN linear kernels on non-x86 platforms. Only enable it for x86 platform.

Fix #25155 #24976

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
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[gemini-code-assist]

Code Review

This pull request aims to disable problematic oneDNN linear kernels on non-x86 platforms. The change correctly adds an architecture check for the unquantized GEMM path. However, the review identifies that this fix is likely incomplete, as the quantized oneDNN path does not seem to be covered by this change and may still cause issues on non-x86 platforms.

[gemini-code-assist]

This fix appears to be incomplete. While it correctly disables the oneDNN kernel for the unquantized path on non-x86 platforms, the quantized path, which also utilizes oneDNN, seems to be unaddressed. If the underlying issue with oneDNN on non-x86 platforms is general, this omission could lead to incorrect behavior or crashes when running quantized models on those platforms. A similar architecture check should be implemented for the quantized oneDNN dispatch path to ensure a complete fix.