Merge branch 'enhancement-57-UHD-interfacing' into develop

cmake_targets/CMakeLists.txt

openair1/PHY/INIT/lte_param_init.c

openair1/PHY/INIT/lte_parms.c

openair1/PHY/LTE_ESTIMATION/lte_dl_channel_estimation.c

openair1/PHY/LTE_ESTIMATION/lte_sync_time.c

openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c

openair1/PHY/LTE_REFSIG/lte_dl_cell_spec.c

openair1/PHY/LTE_TRANSPORT/print_stats.c

openair1/PHY/MODULATION/defs.h

openair1/PHY/MODULATION/ofdm_mod.c

openair1/PHY/MODULATION/slot_fep.c

openair1/PHY/MODULATION/slot_fep_mbsfn.c

openair1/PHY/MODULATION/slot_fep_ul.c

openair1/PHY/TOOLS/lte_dfts.c

openair1/PHY/impl_defs_lte.h

openair1/PHY/impl_defs_top.h

openair1/SCHED/phy_procedures_lte_ue.c

openair1/SIMULATION/LTE_PHY/dlsim.c

openair1/SIMULATION/LTE_PHY/mbmssim.c

openair1/SIMULATION/LTE_PHY/pbchsim.c