keymaster: provide instance name to getService()

Bug: 38430282
Test: VtsHalKeymasterV3_0TargetTest pass with exception
  of (AesEcbWithUserId, RsaAttestation, EcAttestation)
  which are expected failures.

Change-Id: I48e7195f512190deb608f1a69783c92254eef1aa
1 file changed