Add SGS4 Mini LTE ( GT-I9195 ) and 3G (GT-I9190 )

Serranoltexx : GT-I9195
Serrano3gxx : GT-I9190

Device trees are given below.

https://github.com/sileshn/android_device_samsung_serranoltexx
https://github.com/sileshn/android_device_samsung_serrano3gxx