The previous code was really confusing, passing full FNs as RFNs under
certain external conditions, and then assuming the RFN input of
rfn_to_fn() function could actually be a FN.
As a result, we had a lot of code behaving slightly different depending
on whether the incomding FN from pcuif was filled in by a BSC or a BTS.
Avoid this b ehavior differentiation and always assume the most
restricted one, aka RFN.
Change-Id: Ib3b5702168195b595711cd0ff32c211b9aba429d
Pau Espin
33cb3d6175