bpf: Check for additional BPF helpers
bpf: Check for additional BPF helpers

The `bpf_get_current_cgroup_id` will be
used in follow-up commits to get cgroup
id of the container cgroup for socket-lb
tracing.


Signed-off-by: Aditi Ghag <436242e0c0af36e461a395c937165372864a99f9@cilium.io>

cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium,cilium/cilium