[cleanup] accept NONBE_FIX_874_OMASA_BRSW_2TD

/* all switches in this category should start with "NONBE_" */

#define NONBE_FIX_856_TCX_LTP_SYNTH_FILTER                    /* FhG: issue 856: correct filtering length for tcx-ltp synth filtering*/

#define NONBE_FIX_874_OMASA_BRSW_2TD                          /* Nokia: issue 874: Fixes the crashes with the long test vectors that prompted switching to TD*/

#define NONBE_FIX_871_ACELP_CRASH_IN_OSBA                     /* FhG: isse 871: crash in ACELP core encoder with OSBA */

#define NONBE_FIX_906_SBA_LBR_SMOOTHING                       /* FhG: issue #906: fix SBA low bit rate smoothing for HOA2/HOA3 output */

#define NONBE_FIX_878_RS_FEC_STEREO_CNG                       /* Eri: Frame loss and Unified Stereo CNG may cause false BER detection which results in corrupt bitstream decoding */