Fix contact lookup with CLIR prefix

Allow phone numbers which are saved in the phonebook including a
CLIR prefix to be correctly resolved on an incoming call.

For a proper fix, all special cases detailed in calledPartyBCDToString()
should be taken into account; unfortunately that function cannot be
directly used as it currently is.

Change-Id: Ie070e1efc0921bfb0ae0802f500afced5071a652