Add TMOUS LTE APN

This is taken from the OTA update for the Note II.
All APNs are currently resolving to the same 2 addresses from my T-Mobile phone.
The T-Mobile support website lists fast.tmobile.com (no hyphen).
I am attempting to mirror the stock OTA from T-Mobile.

Change-Id: I863b517be7dec19620b79fc876a88ba65e4dacba