The BG was set to its default for rounds > 0. This is now fixed by adding it to harq structure.
Also a fix for wrong I_lbrm set in dlsch decoding.

Also fixed bugs in ulsim and dlsim harq tests

- ceiling computation num of segments (cod/dec)
- fixes demodulation
- initialisation CW for PDSCH RA
- memcpy dl_ch_estimates to pdsch_vars_ra (hotfix)
- correct N_RB for DCI 1_0 and RNTI_RA

temporary changes for nr_ulsim. To be removed when new branch with SCF NR FAPI for PUSCH is merged in.

fix rate-matching receiver and mappings in nr_dlsch_decoding.c and nr_ulsch_decoding.c. Performance with dlschsim and ulschsim seem correct. Code written for all RV_IDX but only rv_idx=0 tested. ulschsim performance seems a bit too good.

Testing of NR PDCCH/PDSCH with RRC Configuration. added RRC configuration to NR UE. Updates to UE DCI procedures (moved to MAC) and updates to FAPI interfaces for UE. nr_dlsim is functional, added profiling information for gNB TX.