jflte: set proper lte mode and default network mode

* GSM devices show a CDMA subscription menu with lteOnCdmaDevice enabled.
* Also I seem to recall several other CDMA-specific things that get
  enabled with this flag being set.
* Global is not a GSM network mode. They should be using 9.

Change-Id: Ib37ec0433f7aa688afae277f3459c36b9ba25bfa
jflte: add mpdecision to system group

Change-Id: Ic669a0eb87a300a278359a4963307c10413a440f
Reference: https://android.googlesource.com/device/lge/hammerhead/+/bf8fcfa71fd365add34a394cbe38828ce8a558fb%5E!/#F0