Merge branch 'master' of git.astron.nl:desp/hdl

...esigns/lofar2_unb2b_ring/tb/vhdl/tb_lofar2_unb2b_ring.vhd

...gns/lofar2_unb2b_ring/tb/vhdl/tb_tb_lofar2_unb2b_ring.vhd

...far2_unb2b_sdp_station/lofar2_unb2b_sdp_station.fpga.yaml

...esigns/lofar2_unb2c_ring/tb/vhdl/tb_lofar2_unb2c_ring.vhd

...gns/lofar2_unb2c_ring/tb/vhdl/tb_tb_lofar2_unb2c_ring.vhd

...far2_unb2c_sdp_station/lofar2_unb2c_sdp_station.fpga.yaml

libraries/base/ring/src/vhdl/ring_tx.vhd