m8: Enable HW based disk encryption

Enabling HW based disk encryption as HW based crypto
engine is more efficient both in terms of power and
throughput.

Change-Id: I8e1da422443ea59ae1b4b992b0468330183bca7a
m8: Set correct battery capacity

Change-Id: I42804c4595bec384b7dca1601e49679bfc7396de