[NFC] Move MTE mode settings to a product variable. am: e073622c26 am: 99c19493f7 am: 1831092f8c am: 9a228629b4 am: 1a3fe3cb2a

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

Change-Id: If8c865d8f01c87900f6db95b73fa70230127979a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>