[lld] [llvm] [lld][COFF] Restore `lto-embed-bitcode` and `-fembed-bitcode` Bitcode Embedding Features (PR #188398)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

As the regression was in 22.x, I think this should be backported as well.

https://github.com/llvm/llvm-project/pull/188398