Start using CarrierConfig for 4G/LTE icon

Icon will be updated on sim swap or in case
the default data SIM changes.

Test: Add configs in vendor xml and swap between sim cards.
Tested on both single sim and dual sim.
Bug: 113309356
Change-Id: I1847bcb4e6c1b6dcef7b14bce14f91bd3e4734a5