Moved channels settings from carrier config to resources

Since CBS channels are more countries specific instead
of carrier specific, moving it to resources makes
more sense.

Test: Manual
bug: 31223529
Merged-In: I251a55ba0b17a96ee545cad68558c1ee2c6a707c
Change-Id: I251a55ba0b17a96ee545cad68558c1ee2c6a707c