Add STORAGE_KEY tag to keymaster 4.1

These are keymaster keys used specifically for storage
encryption. This provides the ability for keymaster implementations to
securely protect storage encryption keys.

Test: VtsHalKeymasterV4_1TargetTest
Bug: 147733587
Change-Id: I5f7f83755fcbed96d8f38fa51812aa6d2eb0927b
3 files changed