libbpf: Avoid enum forward-declarations in public API in C++ mode
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.163 by commit 17c2eb9ce8c16439b1ead765f565a38238cd94e0. For more details please see the references link.