[llvm] [BPF] Handle nested wrapper structs in BPF map definition traversal (PR #144097)

[via llvm-commits]

eddyz87 wrote:

I did a sanity check with BPF selftests, all are passing. Also there are no significant changes in the generated BTF (there is some slight reordering, but that's not important).

https://github.com/llvm/llvm-project/pull/144097