[NFC] Move MTE mode settings to a product variable. am: e073622c26

Original change: https://android-review.googlesource.com/c/platform/hardware/st/secure_element/+/2622660

Change-Id: I05981b42bfd75711200d419de4fe697ba8b29c93
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>