Commit
4ed837cba80e55080f749e55afe1395f02e16cd2
by Pau Espin Pedrolpeek_l3_ul_nas: Split parsing logic based on PS/CS ctx
It makes no sense to receive an MM message over PS context or a GMM
message over a CS context, hence better clearly split the parsing code
paths to avoid unintended logic execution.
Related: OS#6717
Change-Id: I198f2fd14952362c4d189663d067c7f9dae2ed05