Resolve "Use of uninitialized variables in dlschsim"

See merge request oai/openairinterface5g!520

Resolve "memory leak in polar_init"

See merge request oai/openairinterface5g!518

Nr pdcch updates

See merge request oai/openairinterface5g!516

Critical bugs from compilation, Ocp nrsimulator

See merge request oai/openairinterface5g!512

Merge branch 'nr-multiple-ssb' of https://gitlab.eurecom.fr/oai/openairinterface5g into nr-multiple-ssb

commenting out call to dl_indication(&ue->dl_indication); as this is not finished and makes UE crash.

reverting changes to lte_phy_scope.c + commenting out call to phy_scope_eNB in nr-softmodem. The function phy_scope_gNB does not exist yet.

Nr pdcch updates

See merge request oai/openairinterface5g!514

  -- should prevent VM-creation crashes during test stages
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>
(cherry picked from commit eeffdfa2)
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

issue401-nr-pucch-dmrs-format_2

See merge request oai/openairinterface5g!510

Conflicts:
	openair1/PHY/MODULATION/slot_fep_nr.c
	openair1/PHY/NR_UE_ESTIMATION/nr_dl_channel_estimation.c
	targets/RT/USER/nr-ue.c

This partially reverts commit 449da9ac.