[llvm] [llvm-readobj][COFF] Add support for version 2 of CHPE metadata (PR #109545)

[Jacek Caban via llvm-commits]

cjacek wrote:

The change to `chpe_metadata` also affects the check in `COFFObjectFile::initLoadConfigPtr`, which uses `sizeof()`, but it should be fine for v1 as it should have placeholders there anyway, like we do in `lld/test/COFF/Inputs/loadconfig-arm64ec.s`.

https://github.com/llvm/llvm-project/pull/109545