rust: Use autogenerated Trusty makefile rules am: 35279932a6

Original change: https://android-review.googlesource.com/c/trusty/app/keymint/+/2640547

Change-Id: I962445fd9a0961911a21ea81050c79781de8500d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>