Triggering notifications when dual CDMA SIM combinations are detected

In Telelphony, if both active subscriptions are CDMA capable, notify
Setting which will send a warning to user of it.

Bug: 132631355
Test: manual - have two cdma capable subscriptions active, make sure
the notification is sent, and tapping on it leads to the helper page.

Change-Id: If5740d08311a99eaea0c8980b40c4f78b7ecab6d