Whitespace fixes

celt/mips/celt_mipsr1.h

celt/mips/fixed_generic_mipsr1.h

celt/mips/pitch_mipsr1.h

silk/fixed/mips/noise_shape_analysis_FIX_mipsr1.h

silk/fixed/mips/prefilter_FIX_mipsr1.h

silk/fixed/mips/warped_autocorrelation_FIX_mipsr1.h

silk/fixed/noise_shape_analysis_FIX.c

silk/fixed/prefilter_FIX.c

silk/mips/NSQ_del_dec_mipsr1.h

silk/mips/macros_mipsr1.h

silk/mips/sigproc_fix_mipsr1.h