ivas dirac dec rend functions conversion, efap and reverb cleanup

[x] Converted ivas_dirac_dec_output_synthesis_process_subframe_psd_ls() and it's subfunctions
[x] getEfapGains_fx integrated
[x] ivas reverb cleanup and basop changes
[x] Fix for High MLD issues for [SBA at 48 kbps, 32kHz in, 32kHz out, BINAURAL ROOM IR out, HR, reference vector tracking, in level exo]