Add support for CellInfoCallback#onError

Invoke CellInfoCallback#onError in two cases
1) When RIL determines a timeout and returns
   a timeout failure to the higher layer.
2) When the IRadio returns an explicit failure
   for getCellInfoList()

Bug: 120488917
Test: manual (with SL4A)
Change-Id: I5bba7844800c7a7d046d0fc57ae8401e82427909
1 file changed