+ replacing find_ue_NB by find_ue_NB_IoT

+ replacing PHY_vars_eNB_g by PHY_vars_eNB_NB_IoT_g

all include of defs.h by defs_nb_iot.h in 33 files.

LTE_TRANSPORT/proto.h
targets/SIMU/USER/init_lte.c

replacing NB by NB_IoT in SCHED/IF_Module_L1_primitives_nb_iot.c,SCHED/defs_nb_iot.h,SCHED/phy_procedures_lte_eNb_nb_iot.c,targets/RT/USER/lte-enb.c

renaming function: replacing NB_generate_eNB_dlsch_params_from_dci by generate_eNB_dlsch_params_from_dci_NB_IoT, in files
LTE_TRANSPORT/dci_tools_nb_iot.c /LTE_TRANSPORT/proto_nb_iot.h SCHED/phy_procedures_lte_eNb_nb_iot.c

renaming function: replacing NB_generate_eNB_ulsch_params_from_dci by generate_eNB_ulsch_params_from_dci_NB_IoT , in files /LTE_TRANSPORT/dci_tools_nb_iot.c /LTE_TRANSPORT/proto_nb_iot.h SCHED/phy_procedures_lte_eNb_nb_iot.c

renaming function: replacing NB_add_dci by add_dci_NB_IoT , in files LTE_TRANSPORT/dci_tools_nb_iot.c LTE_TRANSPORT/proto_nb_iot.h

renaming generate_dci_top_NB function in LTE_TRANSPORT/dci_nb_iot.c LTE_TRANSPORT/proto_nb_iot.h phy_procedures_lte_eNb_nb_iot.c

renaming variable name in ccoding_byte_NB_IoT.c,  renaming function of lte_rate_matching_NB_IoT.c, adding new file:crc_byte_NB_IoT.c, adding missing functions to defs_nb_iot.h

Merge branch 'develop-nb-iot-mac' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-mac

adding NPDCCH structure for UE specific and Common Search space. To be implemented NPDCCH repetitions.Code Copile. 145 Warnings

introduction of some UE-specific parameters for NPDCCH (Seems missing in FAPI for the moment). Code copile, 149 warnings

Merge branch 'develop-nb-iot-mac' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-mac

Adding preliminary .config file for nb-iot (to be completed), adding EARFCN calculation for configuration with corresponding table for UE cat NB1/NB2

Merge branch 'develop-nb-iot-mac' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-mac

Merge branch 'develop-nb-iot-mac' of https://gitlab.eurecom.fr/oai/openairinterface5g into develop-nb-iot-mac

 adding some consideration and implement some checking based on FAPI specifications for ndlsch path. Function for encoding, modulation ecc.. still to be added. Code Compile. 144 warnings

modified conditions for triggering the npdsch_procedure, still modulation, encoding...functions to be integrated. Warnings 144.Code compile