apn: Update Magyar Telekom (HU)

MCC: 216
MNC: 30

* Take FP4 as baseline
* Add type 'ia' and carrier_id from AOSP
* Fix up naming and authtype as per specs

Issue: FP3-A11#360
Change-Id: I1f3f7c21587767d7581970e0f38ca014180faece
1 file changed