Add KM_TAG_USER_SECURE_ID.

This tag identifies the user authorized to use the key.  Unlike
KM_TAG_USER_ID, its value does not reference the Linux-side user ID, but
a secure-world user ID, generated and managed by secure-world
authentication apps.

Bug: 19511945
Change-Id: I629ab2c47ee6d42de20a963ef283e330364c8ee7
1 file changed