RSL_Emulation: Permit registration of explicit Channel Number

During assignment or hand-over, a given TTCN-3 component may be
interested in registering more than one channel number.  Add an explicit
procedure port with associated registration procedure, similar to what
we already do in GSUP, MNCC and others.

Change-Id: Iba37bf9541c779b79e179f995cdfa677633fadeb
2 files changed