Add a carrier option to hide the option of "Enhanced 4G LTE Mode"

The option "Enhanced 4G LTE Mode" currently may be hidden according to
the VoLTE state of the plateform and device. With this new option we can
choose to hide the "Enhanced 4G LTE Mode" irrespective of VoLTE state.

Bug: 36220377
Test: manual
Change-Id: I516ad050e623a368f2c2ef3d81650eb20c20fd5b