build: Export lk.elf am: 8eeeeec410

Original change: https://android-review.googlesource.com/c/trusty/vendor/google/aosp/+/3126876

Change-Id: I4d6ab26768e5fdc40fd60b114c7f69b38c42c157
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>