cleanup: rename PHY traces (and update code to reflect the changes)

common/utils/T/T_messages.txt

common/utils/T/tracee/tracee.c

common/utils/T/tracer/enb.c

common/utils/T/tracer/textlog.c

openair1/PHY/LTE_ESTIMATION/lte_ul_channel_estimation.c

openair1/PHY/LTE_TRANSPORT/phich.c

openair1/PHY/LTE_TRANSPORT/pucch.c

openair1/PHY/LTE_TRANSPORT/ulsch_demodulation.c

openair1/SCHED/phy_procedures_lte_eNb.c