Extend non-XS1 processing to XS3 about lib_dsp

[mbanth]

I have fixed this issue in dsp_sqrt_xs2.S, dsp_fft_bit_reverse.S, dsp_fast_float.xc, and one instance in dsp_fft.xc.

[oscarbailey-xmos]

All places where __XS2A__ is used now includes a case for XS3:

oscar:~/s/l/lib_dsp> rg __XS2A__
lib_dsp/src/dsp_fast_float.xc
414:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_forward.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_real.xc
83:#if defined(__XS2A__) || defined(__XS3A__)
94:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_split_spectrum.S
6:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_zero_reverse_forward.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_inverse_DIF.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_gc.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_long_short_conversion.S
6:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_merge_spectra.S
6:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_bit_reverse.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft.xc
8:#if !defined(__XS2A__) && !defined(__XS3A__)
226:#if defined(__XS2A__) || defined(__XS3A__)
252:#if defined(__XS2A__) || defined(__XS3A__)
263:#if defined(__XS2A__) || defined(__XS3A__)
272:#if defined(__XS2A__) || defined(__XS3A__)
305:#if defined(__XS2A__) || defined(__XS3A__)
335:#if defined(__XS2A__) || defined(__XS3A__)
346:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_inverse.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_complex_fir.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_complex_hann.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_poly_eval.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_complex.xc
31:#if !defined(__XS2A__) && !defined(__XS3A__)
45:#if !defined(__XS2A__) && !defined(__XS3A__)
54:#if !defined(__XS2A__) && !defined(__XS3A__)
63:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_fast_atan.S
2:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/bfp/dsp_bfp_shl.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/fft/dsp_fft_real_fix.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/bfp/dsp_bfp_bit_reverse_shl.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_filters.c
1479:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_biquad.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/bfp/dsp_bfp_cls.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_complex_add_vector.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_complex_mul_vector.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_min_vector.S
3:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/api/dsp_bfp.h
236:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/api/dsp_math.h
245:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/poly_eval.c
18:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_sqrt_xs2.S
6:#if defined(__XS2A__) || defined(__XS3A__)

lib_dsp/src/dsp_logistics.S
3:#if defined(__XS2A__) || defined(__XS3A__)