Fixing decryption messaging

Messaging currently implies encryption only works with PIN or password
(K functionality). Now that in L we support encryption with PIN, pattern,
password or swipe/none, we need to update the strings accordingly.

@bug 14257692
@bug 13674657

Change-Id: I055db1289c2c2750d217b50b653a7f36ff304aca
3 files changed