NetBpfLoad: combine into one file, part one am: 6e1b4250ee

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3212377

Change-Id: I925ccd360bffc9d03c11b4d710a669049036eddd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>