Ringtone: set default ringtone for triple slots

Set default ringtone for triple slots irrespective of how many sim
cards are actually activated. This awkward behavior is to avoid
ringtone missing when multi-sim settings are changed dynamically.

Change-Id: Id5178df89494fef02b13cc989813a9cacd436e9c
CRs-Fixed: 755560
MSIM: Retrieve the QS Data icon through PhoneId

While updating the quick settings data icon,
use Msim API to get the icon.

CRs-Fixed: 743707

Conflicts:
	packages/SystemUI/src/com/android/systemui/statusbar/policy/TelephonyIcons.java

Change-Id: I6d106e2d03c92eabb7be92f0cf1957489beca0fe