platform: generic-arm64: Guard vsock-rust am: a108415e0d

Original change: https://android-review.googlesource.com/c/trusty/lk/trusty/+/3435559

Change-Id: I76f88dfae84960fed7c39b2fa345cbed899c2264
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>