rsl: Send IE MS Power Param to osmocom BTS models only

Since MS Power Param IE content is operator dependant, it's currently
not known which kind of content non-osmocom BTS support/allow, so let's
avod possibily breaking those BTS until each BTS has been checked
separately.

Related: OS#1622
Change-Id: If44121222042bdac06c2a5e70f7b35a88b00b27c
1 file changed