Fix "TelephonyRegistry notifies wrong data status"

TelephonyRegistry should notify data status by correct subId,
otherwise in some case, SIM1 data status will be overried
by SIM2 data status.
Such as screen on/off action.If in fact SIM1 is data connected
to download something, but SIM2 is not,then sreen off,
both SIM1 and SIM2 will be notified to update data status.
Then SIM1 data status will be overried by SIM2 to be "no data
connected", before SIM1 data downloading is finished,SIM1
will not be able to show "data conneced" status.

Change-Id: Ia7d0767b3b4520294ee0d024903f7522cb0a0110