multi-carrier overlays: Add eri and config for US Cellular

Change-Id: I112716f94eb9fe7509845689688fcea13da361f7
cm: New ultimate revolutionary feature of revolution!

Change-Id: Ia3d0a099b8cb0c5170f3aaba0fb68d1f216b6be7
add more vzw eri's

Change-Id: I8a299ad5d727dd084eb173aeb040c165bb556f51