Fix duplicate symbols error in external/vboot_reference am: 00f96d2a69 am: 7b542b1691 am: 963f386e58

Original change: https://android-review.googlesource.com/c/platform/external/vboot_reference/+/2658076

Change-Id: I14f0330b63b56e5ad54e825f3a97dea4e561c429
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>