SBA dec path optimization - Bit Exact changes

Changes are made under macro OPT_SBA_DEC_V2_BE

Functions and corresponding WMOPS improvements:
ivas_spar_get_parameters_fx 0.4

Commands:
./IVAS_cod -sba 1 256000 48 scripts/testv/stvFOA48c.wav bit_sba 
./IVAS_dec 7_1 48 bit_sba sba.wav