Fix Mms failures due to wrong numeric

In TelephonyProvider, where mms apn is queried for mmsc url from
telephony apns db, sometimes mcc-mnc value read from getSimOperator
method is wrong for uicc card with multiple apps.
Replace getSimOperator with getIccOperatorNumericForData method,
which gets mcc-mnc value based on PS RAT registered.

Change-Id: Ida4d8e33dd85e08b4bd09b5053d3803a7689d55f
CRs-Fixed: 930607
1 file changed