Replacing SPK_INLINE by static inline

silk/fixed/silk_noise_shape_analysis_FIX.c

silk/fixed/silk_prefilter_FIX.c

silk/fixed/silk_solve_LS_FIX.c

silk/float/silk_SigProc_FLP.h

silk/float/silk_noise_shape_analysis_FLP.c

silk/float/silk_prefilter_FLP.c

silk/silk_A2NLSF.c

silk/silk_CNG.c

silk/silk_Inlines.h

silk/silk_LP_variable_cutoff.c

silk/silk_MacroCount.h

silk/silk_MacroDebug.h

silk/silk_NLSF2A.c

silk/silk_NSQ.c

silk/silk_NSQ_del_dec.c

silk/silk_SigProc_FIX.h

silk/silk_control_codec.c

silk/silk_encode_pulses.c

silk/silk_macros.h

silk/silk_resampler_private_IIR_FIR.c