Add diced security class

Add diced to security_class and access_vectors so it can check its
permissions in side Microdroid.

This was part of commit 2b6c6063ae8799f3d4e71032e06816ebfcd22586
outside the VM.

Bug: 214231981
Test: composd_cmd dice
Change-Id: Ia503db183d16a4efcb975f654bb4483df44f51ad
2 files changed