Telephony: Enable data call on CSIM.

- Let DCT get mcc/mnc from phone object.
- GsmCdmaPhone would return mcc/mnc as follow...
    - If phoneType is GSM then mcc/mnc from SimRecords
    - If phoneType is CdmaLte then
        If CdmaSubscriptionSource is NV
            mcc/mnc from ro.cdma.home.operator.numeric
        Else
            If SimRecords present then mcc/mnc from this recored.
            Else mcc/mnc from RuimRecords.

- ApnSettings UI would always display list of APNs based on mcc/mnc of GsmCdmaPhone.
    - CDMA operators having LTE
        - APN UI would list LTE apn profile since mcc/mnc is from SimRecords.
    - Legacy CDMA operators
        - APN UI would be empty since such simcard would not have Sim/Usim app.
        - OEM must add profile in apns-conf.xml for such operators.

Change-Id: Ib8fd65eb8b18661d76a71ee24f1e732fb467d5c4