Merge branch 'master' into L2SDP-551

.../designs/lofar2_unb2c_ring/src/vhdl/lofar2_unb2c_ring.vhd

...lofar2_unb2c_ring/src/vhdl/qsys_lofar2_unb2c_ring_pkg.vhd

applications/lofar2/images/images.txt

...r2/images/lofar2_unb2b_sdp_station_full-r13eddc87d.tar.gz

boards/uniboard2c/images/images.txt

boards/uniboard2c/images/unb2c_test_heater-r6825a1822.tar.gz

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

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

...ogy/ip_arria10_e1sg/jesd204b/ip_arria10_e1sg_jesd204b.vhd

...ogy/ip_arria10_e2sg/jesd204b/ip_arria10_e2sg_jesd204b.vhd