Integrate libgbl into bazel build Add a BUILD file and fixes needed for building libgbl in bazel. In EFI environment, all memories are managed and allocated by UEFI loader. We can't hardcode address space for load buffer. The API is updated to ask the caller to provide the load buffer instead. Bug: 325312615 Change-Id: I38d3fa35f3df85b3488062ccdf3652e2ae661130