[Dev] BUG Fix for bitnet integration

[LeiWang1999]

This pull request includes several changes across multiple files to improve functionality, fix issues, and update dependencies. The most important changes include updating a submodule, modifying conditions for specific operations, and updating script behavior for model generation.

Submodule Update:

• 3rdparty/tvm: Updated submodule commit to the latest version. ([3rdparty/tvmL1-R1](https://github.com/microsoft/BitBLAS/pull/141/files#diff-fa909c93fe94e9aa04c9e7f19e5754a2bb274678ad5c6275ee4bf54c6f9b1066L1-R1))

Code Enhancements:

• bitblas/gpu/matmul_analysis.py: Modified the condition to check for dequantize_info to ensure it only supports float16 data type. ([bitblas/gpu/matmul_analysis.pyL626-R627](https://github.com/microsoft/BitBLAS/pull/141/files#diff-6f289ae4794dea10c7718ec09a9e100a564894c8a93c36559c9fa6d0688553e3L626-R627))
• bitblas/ops/general_matmul/__init__.py: Added a temporary solution to legalize the dynamic symbolic, with a note to potentially remove it in the future. ([bitblas/ops/general_matmul/__init__.pyR88-R89](https://github.com/microsoft/BitBLAS/pull/141/files#diff-74fe5dd2824cb03a0fb2b0a913a2fc5caeb9c08e5368c318cd32b3af7e6f52edR88-R89))

Script Updates:

• integration/BitNet/eval_correctness.py: Disabled flash_attention_2 and added functionality to quantize the model and compare generated text before and after quantization. ([integration/BitNet/eval_correctness.pyL75-R88](https://github.com/microsoft/BitBLAS/pull/141/files#diff-24610ce0fe8c0977dec03f95f17f709d384085cdb8ff49f86f563dba7dfa5ec4L75-R88))
• integration/BitNet/maint/create_bitblas_ckpt.py: Disabled flash_attention_2 in the model configuration. ([integration/BitNet/maint/create_bitblas_ckpt.pyL71-R71](https://github.com/microsoft/BitBLAS/pull/141/files#diff-8b1a01ecd38f6ed3a87e4974faf672137b4a044a6137bc3ff7854a0d515689efL71-R71))
• integration/BitNet/maint/generate_bitnet_model_bitblas_format.sh: Added a check to create the SAVED_MODEL_DIR directory if it does not exist. ([integration/BitNet/maint/generate_bitnet_model_bitblas_format.shR21-R23](https://github.com/microsoft/BitBLAS/pull/141/files#diff-d6095b66d1b0492e71833fb5a0f99593bf2261720a96ab43811a1b32f136b6c1R21-R23))

Dependency Update:

• integration/BitNet/requirements.txt: Added transformers==4.40 to the requirements. ([integration/BitNet/requirements.txtR3](https://github.com/microsoft/BitBLAS/pull/141/files#diff-c274b4a63b1dc11eb5c71badfa85865c12befc3563dfa52d57f5c4655809c155R3))