MSIM: Fix for 3G symbol not displayed on T+G issue

On a DSDS Tdscdma+Gsm device, when DDS is set to Tdscdma sub,
3G symbol is not getting displayed.
Add code changes to update data icon to 3G for TD_SCDMA network type.

Change-Id: I3efdf1cc474e5b2316757de79200fc59ba196f52
CRs-Fixed: 546652