Generate IKeystoreService using aidl

This replaces IKeystoreService.java with IKeystoreService.aidl and
changes the methods that passed down a byte[][] to instead pass down a
KeystoreArguments which is currently a thin parcelable wrapper around a byte[][].

Change-Id: I6367bcf57562f41a27aab14f1903b74995cb65c2
6 files changed