Add a new intent ACTION_MMSSMS_DATABASE_LOST

This intent is to catch the mmssms.db getting mysteriously lost.
The is a hide@ API and is protected with MODIFY_PHONE_STATE permission.

Bug: 115990430
Test: Simulated mmsmsm.db corruption and verified that the intent is
broadcasted and received by application with MODIFY_PHONE_STATE
permission

Change-Id: I3474df294c550b503b74bde25f10ae43ab5863a1