Add new reason code for call failed by unobtainable number

To show the "Invalid number" on the end call screen when user makes a
IMS call with unobtainable number, this reason code is used.

Test: manual - Checked that "Invalid number" is shown when make the IMS
MO call to unobtainable number.
Bug: 69940434

Change-Id: If3c54e6f55850141efad56ad7712db3c82a14f43
1 file changed