phone call ring not comes out from earphone.

[Yuan-Chen Cheng]

ring tone should be out from both speaker and earphone as phone call, but it only from speaker.

Device: nexus 4
Firmware: utopic r148 (20140724-020204)

Test Procedure:
 * plugin earphone to nexus 4 (both two wired and three wired earphone are tested)
 * make a phone call to nexus 4

Expected result:
 * Ring tone comes out from both speaker and earphone

Current result:
 * Ring tone comes out from only speaker.

[Ricardo Salveti (rsalveti)]

Our expected result is for the ringtone to come out just at the default output device (speaker or wired headset). If the user has a bt device connected, it'll use speaker as well.

[Ricardo Salveti (rsalveti)]

And for it to go to wired headset, https://code.launchpad.net/~rsalveti/telepathy-ofono/adding_support_for_hsp/+merge/229292 needs to be merged.