Prepare for using subband fraction bits between WPFB and subband equalizer / BF.

...ons/lofar2/libraries/sdp/src/vhdl/node_sdp_filterbank.vhd

...ibraries/sdp/src/vhdl/node_sdp_oversampled_filterbank.vhd

...ns/lofar2/libraries/sdp/src/vhdl/sdp_beamformer_local.vhd

...ications/lofar2/libraries/sdp/src/vhdl/sdp_bf_weights.vhd

applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd

...s/lofar2/libraries/sdp/src/vhdl/sdp_subband_equalizer.vhd

libraries/dsp/fft/src/vhdl/fft_r2_pipe.vhd

libraries/dsp/fft/src/vhdl/fft_r2_wide.vhd

libraries/dsp/fft/src/vhdl/fft_reorder_sepa_pipe.vhd

libraries/dsp/fft/tb/vhdl/tb_fft_r2_pipe.vhd

libraries/dsp/fft/tb/vhdl/tb_mmf_fft_r2.vhd

libraries/dsp/fft/tb/vhdl/tb_mmf_fft_r2_pipe.vhd

libraries/dsp/verify_pfb/tb_verify_pfb_response.vhd

libraries/dsp/verify_pfb/tb_verify_pfb_wg.vhd

libraries/dsp/wpfb/src/vhdl/wpfb_unit.vhd

libraries/dsp/wpfb/src/vhdl/wpfb_unit_dev.vhd

libraries/dsp/wpfb/tb/vhdl/tb_wpfb_unit_dev.vhd

libraries/dsp/wpfb/tb/vhdl/tb_wpfb_unit_wide.vhd