config: Use carrier config in ROM by default

Bug: 314890118

Test: Flash ROM and confirm the carrier config follows the ROM.
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:8dbc173f2bf04255ce22dd1e13e888050aad36ca)
Merged-In: Id0407802e2027397ca7a409345c51273b75079e7
Change-Id: Id0407802e2027397ca7a409345c51273b75079e7
1 file changed