[1/2] Frameworks: Combine LTE & 2G/3G Tiles

This combines both network tiles into one tile.
2G -> 3G -> 2G3G -> LTE

Linked commit: packages/services/Telephony

Change-Id: Ia0d8edaec0e920b9ba174ec6ce49c5e7b832a5ab
Merge "[1/2] Frameworks: Combine LTE & 2G/3G Tiles" into kitkat