Merge branch 'L2SDP-88' into 'master'

libraries/dsp/st/hdllib.cfg

libraries/dsp/st/src/vhdl/mms_st_histogram.vhd

libraries/dsp/st/src/vhdl/st_histogram.vhd

libraries/dsp/st/src/vhdl/st_histogram_8_april.vhd

libraries/dsp/st/src/vhdl/st_histogram_reg.vhd

libraries/dsp/st/tb/vhdl/tb_mms_st_histogram.vhd

libraries/dsp/st/tb/vhdl/tb_st_histogram.vhd

libraries/dsp/st/tb/vhdl/tb_tb_st_histogram.vhd