[NFC] Move MTE mode settings to a product variable. am: d26716e148

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/2622818

Change-Id: I20cc37a38ad12f95192a86d6619de77702a652ca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>