[Build] Track upstream apache/tvm-ffi

[junrushao]

DO NOT MERGE

[gemini-code-assist]

Summary of Changes

Hello @junrushao, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request synchronizes the local tvm-ffi submodule with its upstream apache/tvm-ffi repository. The primary purpose is to integrate the latest developments and bug fixes, most notably a CMake configuration correction that improves the build process when tvm-ffi is used as a subdirectory. This ensures the project benefits from the most recent stability and compatibility improvements from the dependency.

Highlights

• Submodule Update: The tvm-ffi submodule has been updated to the latest upstream HEAD, specifically commit 58875b99330487e3629778f00a02c2278e3ea851.
• Upstream Fix Included: This update incorporates a critical CMake fix from the upstream apache/tvm-ffi repository, addressing issues when building as a subdirectory.

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[gemini-code-assist]

Code Review

This pull request updates the tvm-ffi submodule to a newer commit. While this is a routine maintenance task, the pull request lacks a description detailing the changes included in the submodule update. This makes it difficult to assess the potential impact, such as breaking API changes, on the rest of the codebase. For improved maintainability and easier reviews, it is highly recommended to summarize the upstream changes in the pull request description.