Add Tuenti to not showing R on signal bar

That is a virtual carrier and is always on Roaming because of some compatibilities issues with Movistar(real carrier).

Change-Id: I838c03e9a3ec4945fb8a9b3d6ce229fc8d5f6b40
Framework: Fix GSM signal strength

Certain OEM gsm ril libs send back a bogus value for LTE signal
that causes SignalStrength.java to default to LTE and report
incorrect signal values.
Use prop value ro.telephony.ril.v3=signalstrength to get proper
GSM signal reading on certain devices.

Signed-off-by: dhacker29 <davidhackerdvm@gmail.com>

Change-Id: I86279dcbc350fe718d89070acc12178de3c600c2