Allow caller to specify key CN in generate_attestation_from_EVP().

This is needed to generate attestations in the default Identity
Credential HAL implementation which uses software KM.

Test: atest VtsHalIdentityTargetTest
Bug: 171745570
Change-Id: Ic96d1d2362851edca562c5defa1e48bdd0e6e060
Merged-In: I93b6cb939972c214dc67250dd62aa4fdd76273d6
2 files changed