Add PhoneStateListener#onPreferredDataSubIdChanged

When SubscriptionManager#SetPreferredData changes preferredDataSub,
SubscriptionController notifies TelephonyRegistry.

Bug: 115550764
Test: unittest
Change-Id: Iafc5cdf773c378b5c0014134cef19a2239c65d4d
Merged-In: Iafc5cdf773c378b5c0014134cef19a2239c65d4d
3 files changed