A better solution has to be found.

One of the optimized RE allocation function does not work properly
and generates some decoding errors with a COTS UE. Let's use the
generic function for the moment, while analyzing what is wrong.

more flexible to support 4x4 system.

remove compilation warnings, especially when disabling T_TRACER. enhance LOG_M macro implementation, introduce LOG_DEBUG_XXX macro to replace #ifdef DEBUG_XXX

log.c simplification, fix usefull functionality which never worked, move all log code from openair2 to common

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

2. minor modifications in dlsch_demodulation.c for 2 eNB TX antennas, 1 RX antenna. Inconsistant indexing of some arrays in this case.
3. change in config_load_configmodule.c : removed exit(-1) when no configuration file is used. This makes unitary simulators exit. Effect on lte-XXsoftmodem TBC.

receiver. THe proposed solution is to replace the average channel level with
median  = (max+min)>>1.
For these reasons lsch_channel_level_median is introduced.

instead of _mm_srai_epi16
_mm_srai_epi32 should be used as _mm_madd_epi16
packs multiply-adds 16 bits and packs into 4
blocks of 32 bits.

2. Remove get_pmi from  PHY_SRC_UE and add it instead to PHY_SRC_COMMON.
3. Linking lte-uesoftmodem and lte-uesoftmodem-nos1 targets with ${ATLAS_LIBRARIES}.

1. Moving get_pmi into a separate file and making corresponding
changes in CMakeLists.txt.
2. Creating PHY_MEX library with functions required for the receiver
mex-functions.
3. Making necessary changes in defs_UE.h so that mex-functions
do not complain about multiple LOG_ calls.

qpsk_llr, qam16_llr, qam64_llqam64.

to linear_preprocessing_rec.c.
2. Adding linear_preprocessing_rec.c to PHY_SRC_UE library.
3. Adding mmse_flag and mmse functionalities to dlsch_demodulation.
4. For now, dlsim_tm4 will not compile.