initialization of transport channels in nr_dlsim

openair1/PHY/CODING/nr_polar_init.c

openair1/PHY/NR_UE_TRANSPORT/nr_pbch.c

openair1/SIMULATION/NR_PHY/dlsim.c

targets/RT/USER/lte-enb.c

targets/RT/USER/lte-ru.c

targets/RT/USER/nr-uesoftmodem.c