am 47041552: Revert to old-style API for EC_KEY handling

* commit '47041552bd545846a1b7787823af4b5ca9e36dea':
  Revert to old-style API for EC_KEY handling
tree: 16f055f616e5f84fa5ecf9f2cc54ba61dc4ccf3a
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/