Add sound or vibration effect for network-initiated USSD

To inform the user of network-initiated USSD, add sound or vibration
effect. The effect follows current ringtone mode.

Test: manual - Checked that sound or vibration effect when receives
a network initiated USSD.
Bug: 28948816
Change-Id: Ib08d7a30db64020e0393bb9d12ec2ce4b51651cb

Change-Id: I103540f8d865cac6d2adca05a20adc78bd926646
Merged-In: Ib08d7a30db64020e0393bb9d12ec2ce4b51651cb
2 files changed