[NFC][LLVM][BPF] Cleanup pass initialization for BPF

[jurahul]

• Remove calls to pass initialization from pass constructors and move them to target initialization.
• [LLVM][Transforms] Remove calls to pass initialization from pass constructors #111767

[yonghong-song]

Please change topic from Cleanup pass initialization for BFP (or BPP in the commit subject) to Cleanup pass initialization for BPF.