Add hashes for AIDL APIs

All frozen AIDL APIs are required to have a hash, and these are checked
for accuracy at build time. This ensures that these interfaces aren't
changed, since we are relying on their stability over time.

Bug: 148434609
Bug: 150154330
Bug: 149952131
Test: m
Merged-In: I7ed581a6f673dc25210fd6a0628a712dbe1ab944
Change-Id: I6cceb5b400b3fec0d4672488b1d831569768405d