Shuffle fix for gfx950

[ThomasNing]

Proposed changes

Fix the preshuffle regression of gfx950 and also make the modification to a ck tile internal math calling style.

Checklist

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• I have added tests relevant to the introduced functionality, and the unit tests are passing locally
• I have added the test to REGRESSION_TESTS list defined at the top of CMakeLists.txt in tests/CMakeLists.txt, IF the test takes more than 30 seconds to run.
• I have added inline documentation which enables the maintainers with understanding the motivation
• I have removed the stale documentation which is no longer relevant after this pull request
• (If this change is user-facing) I have added release notes which provide the end users with a brief summary of the improvement from this pull request
• I have run clang-format on all changed files
• Any dependent changes have been merged

Discussion

If this is a relatively large or complex change, feel free to start a discussion by explaining why you chose the solution you did and what alternatives you considered

[CongMa13]

The definition of divisor is the count of thread in k dimension in a warp tile.

So the unified formular could be

divisor = get_warp_size() / gemmConfig.N_Warp_Tile;

• It is not affected by the value of K_Warp_Tile.
• It is the same thing as WarpGemmAttributeMfmaImpl***::kABKLane