Telephony: Add config item for regular deactivation

- Default AOSP implementation is to restart the radio for PDP
error cause = 36-Regular deactivation.
- Add xml based option to disable this implementation and treat
error=36 as temp failure.

Change-Id: I72dfb00216967b8f55869b0c6658ef3c2a462974
CRs-Fixed: 568799
Merge 707442de1ce9eb587d1c3076bae21ce9054b4e6c on remote branch

Change-Id: Iabd807befbf83ca9424c910202b83f2272371273