[RingtoneManager] Option for cursor to list parent sounds

Modify RingtoneManager.getCursor so that the cursor returned also
retrieves the parent profile's ringtones, adding the parent's id to
those ringtones

Test: manual (use ringtone picker in associated CL)
Bug: 30658854
Change-Id: I3b52b0dc41a5a3ff1a71a89fd8a0d33023021aba
2 files changed