Shift to KmVersion::KEYMINT_2

- Add KmVersion::KEYMINT_2 = 200 (i.e. 100*AIDL version).
- Use KEYMINT_2 as default version for AndroidKeyMintDevice.
- Keep the version number used for messages between HAL service and TA
  at the same level (4), as no message format has changed (just a new
  enum value).
- Change the attestation extension version number to 200, in both the
  KeyMint version and the format version.
- Change the reported version number in {KeyMint,Rpc}HardwareInfo from
  1 to 2.

Bug: 194358913
Test: VtsAidKeyMintTargetTest, TreeHugger
Change-Id: Id7f763a95865b72927f11c2c1348524655a6c683
7 files changed