Fix CDMA data call issue after emergency call failure.

When emergency call is dialled in CDMA mode, telephony disables
data internally. Data is re enabled after call is ended  if
not in ECBM. If emergency mo call is dropped by network/modem
before going to dialing state, the data is not re enabled.
Fix this scenario by explicitly re enabling data.

Bug: 22826595
Change-Id: I7a62d459dbd6ef6a833fe87e7d35e29311a515fe