bpf_progs: just use bpf_net_helpers.h for common includes am: 22a5f91a33

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3226108

Change-Id: I5cfb331c62a3dc9252b1dd8eff0e16d80b3806c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>