Add HIDL backend to keystore service
am: 657356c169

Change-Id: I1ec2c1f4d75fca5f48ef445f130e2224ac7d7c7b
tree: 7c83ecb665d2f4a7a8946d2bf99e6e6b8221dbfe
  1. keystore/
  2. keystore-engine/
  3. softkeymaster/
  4. MODULE_LICENSE_APACHE2
  5. NOTICE