Move keymint to android.hardware.security.

This is part of a three-step process:

1.  Duplicate keymint and associated bits in the new namespace.
2.  Cut keystore over to depend on the new stuff.
3.  Delete keymint and associated bits from the old location.

Test: VtsAidlKeyMintTargetTest
Change-Id: Icbb373c5090977158d64cc5907f89a3b67b7f71d
7 files changed