trusty: prebuilts-test: fix the ABI by disabling BTI am: ba0e7a1c13

Original change: https://android-review.googlesource.com/c/trusty/app/sample/+/2966683

Change-Id: Idcf5f3a87b3b6ba6217cffcba51b39428a768054
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>