Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Update in SIB1 implementation to solve REG to CCE mapping issues and also correction in pdcch RE extraction when BWP_start>0.

* MR 1031: LTE/NR X2AP: fix content of SgNBAdditionRequest
Wireshark (version 3.3.2) was not happy. https://asn1.io/asn1playground/ was not happy.

* MR 1036: LTE ULSCH bugfix
Minor fix in the UL scheduler

* MR 1008: NR SA ITTI sim update for core connectivity
Updates for connections to 5G core node using ITTI sim. Usage documentation have also been added.

* MR 1025: Cleanup NR RA procedure - mostly UE

Even stricter check/hack for BWP ID.
Drop every DCI where this value is not '1'.

Conflicts:
	openair2/GNB_APP/gnb_config.c
	openair2/RRC/NR/rrc_gNB.c
	openair2/RRC/NR/rrc_gNB_NGAP.c
	openair2/RRC/NR_UE/rrc_UE.c

clean up nr_dlsch_demodulation, solve bug in nr_rb_extract to consider data/dmrs multiplexing/no data, and remove ra_pdsch hack in phy_procedures_nr_ue

Wireshark (version 3.3.2) was not happy.
https://asn1.io/asn1playground/ was not happy.

Let's make them happy.

So then everyone is happy.

This reverts commit 15caed4d.