This completely removes the UESIM_EXPANSION define: it does not compile
at the moment. Its function was to multiplex multiple UEs on the same
TUN interface. However, this functionality is not needed since it is
possible to allocate many TUN devices (i.e., >= 32).

	- MBMS scheduler re-worked to enable dedicated MBMS serving cells
	- added support for multiple eMBMS MCH sessions
	- added support for multiple FeMBMS MCH sessions
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

nr-ip noS1 uplink: Uplink IP traffic successfully received at the IP TUN interface of the gNB now. Logs cleanup.

nr-ip noS1 uplink integration (testing with RFSIMULATOR only): Uplink IP packets received at the gNB and reaching at pdcp layer. Asserion error at pdcp_fifo_flush_sdus when trying to write on the nas socket

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

 - physical simulators
 - LTE eNB
 - LTE UE
 - 5G-NR gNB

Still NR-UE does not build and eNB segs fault at start of program
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

nr-ip-over-LTE: Resolved issue with duplicate IP packet at the receiver UE IP interface and packet losses are reduced. Remaining to identify why occasionally IP packets are received at the PDCP stack later than the time slot of their arrival at PHY/MAC. Introduced some debug logs, to be removed later.

nr-ip-over-LTE: Small fixes, now IP traffic is received at the IP interface of the UE but there are many packet losses and occasionally there are duplicate ping requests received, leading to UE crashing

	BUGIFX PDCP MBMS PIPE

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

	-MBMS scheduler developed (oneFrame allocations implemented at this time)
	-UE DSLCH schedulers updated: if an eMBMS session running UE DTCH, DCCH will be only scheduled at non MBSFN sufbframes
	-eMBMS L2 procedures implemented
	-Dedicated MBMS PDCP pipes src/sink enabled (only for TUN)
	-BUGFIX eMBMS MAC procedures (wrong indexing at few loops)
	-ENB FAPI updated to enable dynamic MBSFN configurations through M2AP (RRC<->MCE)

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

nr-ip-over-lte :Enable TUN interface at nrUE and required (LTE-based) PDCP, RLC configuration for DL IP traffic flow. Traffic received at the UE TUN IP interface successfully now.

Fix Coverity Scan CID 340247 (Variable pc5s_header going out of scope leaks the storage it points to.)

Downlink IP traffic flow using LTE RAN stack over NR-PHY. Downlink traffic reaching PHY of gNB now using the noS1 mode. Extensions required for the reception through the LTE RAN stack at the UE side.

Fix corrupted LOGs in L1L2simulator, introducing two new components NFAPI_VNF and NFAPI_pnf. Integrate Fujitsu fix for up to 50 UEs. Apply astyle to all modified files in the branch

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