Identity Credential: Pass additional information to HAL.

Without this extra information passed upfront it's not practical to
implement a HAL which incrementally builds up cryptographically
authenticated data.

Two new methods are added to facilitate this and the HAL version
number is bumped to 2.

Bug: 154631410
Test: atest VtsHalIdentityTargetTest
Test: atest android.security.identity.cts
Change-Id: Iff63dfa2c4485c8768e06e7f6d70e940cfc8f68e