[llvm] [llvm-objdump] Add support for symbolizing PGOBBAddrMap Info (PR #76386)

[James Henderson via llvm-commits]

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+# Test that in the presence of SHT_LLVM_BB_ADDR_MAP sections which also
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jh7370 wrote:

Nit: newer llvm tools tests typically use `##` for comments, to help them stand out from lit directives.

https://github.com/llvm/llvm-project/pull/76386