read spn from IccRecord

move dependencies from spn override in carrier identification.
Note, this might not working correctly till we integrate carrier id
to carrier config because iccRecord.getServiceProviderName could
still return overriden value from carrier config.

Bug: 72665237
Bug: 69807697
Bug: 110559381
Test: Manual
Change-Id: I772180c8be2e193a421849ec01e5e5e88b683f5b
Merged-in: I772180c8be2e193a421849ec01e5e5e88b683f5b