rilmodem: Parse reply to check for file not found
gril: Fix ril_msg invalid event_data bug

Wrong event data instead of nothing was being passed to upper layers
when the parcel had no event data (LP #1254219).
gril: Add functions for call-volume refactor

Functions for creating requests and parsing replies needed by
rilmodem call-volume module.
rilmodem: Re-factor call-volume

grilrequest and grilreply functions are used now for creating and
parsing parcels.
unit: call-volume parcels tests
Merge pull request #29 from alfonsosanchezbeato/sim-no-file

Remove ofono_error messages for not found files
Merge pull request #33 from alfonsosanchezbeato/callvolume-refactor

Callvolume refactor
gril: Add functions for devinfo re-factor

Functions for parsing replies needed by rilmodem devinfo module.
rilmodem: Re-factor devinfo

grilreply functions are used now for parsing parcels
unit: devinfo replies parsing tests
Merge pull request #35 from alfonsosanchezbeato/devinfo-refactoring

Devinfo refactoring
unit: Add tests for gprs/netreg re-factoring

Also cleaned up formatting of parcel hex data
which inadvertently included tabs as whitespace
between bytes instead of spaces for some messages.
Merge pull request #34 from tonyespy/gprs-netreg-unit-tests

Gprs netreg unit tests