am 7d211c09: Merge "Add -Wunused to keystore"

* commit '7d211c094b3124d0646b6397da679c708d4e1b08':
  Add -Wunused to keystore
tree: 316d2730a45f0187d781bc59ce66d344df746ec7
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/