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
diff --git a/Android.mk b/Android.mk
index 5d9c5b3..15afe90 100644
--- a/Android.mk
+++ b/Android.mk
@@ -202,6 +202,7 @@
 	core/java/android/os/IUpdateLock.aidl \
 	core/java/android/os/IUserManager.aidl \
 	core/java/android/os/IVibratorService.aidl \
+	core/java/android/security/IKeystoreService.aidl \
 	core/java/android/service/notification/INotificationListener.aidl \
 	core/java/android/service/notification/IStatusBarNotificationHolder.aidl \
 	core/java/android/service/notification/IConditionListener.aidl \