bpfloader: add support for netd_shared and net_private subdirs am: 7acf938127

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/2096353

Change-Id: I3804d6116f11a915764a3b02ac1ec54df245b73b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>