netbpfload: simplify attach type related logic am: 346831c66f am: dc4e115cd7

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3216956

Change-Id: I03426fb8b4a48007eee706808438bfcf2288d081
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>