Revert "Remove conditional vndbinder usage in CAS."

This reverts commit 5884a6f0f3059643c98eff76ddd69f6c1dd79d1f.
Bug: 70393284

Reason for revert: Fugu doesn't have vndbinder yet.
Exempt-from-owner-approval: Device doesn't boot.

Change-Id: Ib23691c102fd8aca63a4a6755eb7fd1f9e852a4d
2 files changed