enable btf for offload.o & test.o am: 07d3013b0d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2089289

Change-Id: I21e02752dd02464ce4de5627308dfdf77ece2941
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>