If no NITZ information use Country Code to set TimeZone.

This is not perfect and only works if the CC is known via
the GSM radio and is only accurate if there is one time zone
per country. This does nothing to resolve time zone problems
for wifi only devices.

So this is a partial fix for bug 2896745

Bug: 2896745
Change-Id: I78f013836c4e4870b8b1016a8312f5adbe0d31c9