msc: add a COORD port for inter-component coordination

Also provide a blank receive template for CallParameters which is
needed to receive a CallParameters record via the COORD port.

Will be used by MSC_Tests.TC_call_re_establishment in
Ifdff5573eeb3b3d41e8599b9b0228411d2576864

Change-Id: Iba3a5304fa40159bc2c31cdc3a71ee56ed08bd12
1 file changed