added unb2c revision for xsub_ring

...far2_unb2b_sdp_station/lofar2_unb2b_sdp_station.fpga.yaml

..._station_xsub_ring/lofar2_unb2b_sdp_station_xsub_ring.vhd

...far2_unb2c_sdp_station/lofar2_unb2c_sdp_station.fpga.yaml

..._unb2c_sdp_station/qsys_lofar2_unb2c_sdp_station_cpu_0.ip

...dp_station/qsys_lofar2_unb2c_sdp_station_reg_bsn_align.ip

...ofar2_unb2c_sdp_station_reg_bsn_monitor_v2_ring_rx_xst.ip

...ofar2_unb2c_sdp_station_reg_bsn_monitor_v2_ring_tx_xst.ip

...nb2c_sdp_station_reg_dp_block_validate_bsn_at_sync_xst.ip

...lofar2_unb2c_sdp_station_reg_dp_block_validate_err_xst.ip

...tation/qsys_lofar2_unb2c_sdp_station_reg_input_monitor.ip

...ation/qsys_lofar2_unb2c_sdp_station_reg_output_monitor.ip

...dp_station/qsys_lofar2_unb2c_sdp_station_reg_ring_info.ip

...n/qsys_lofar2_unb2c_sdp_station_reg_ring_lane_info_xst.ip

...tion/qsys_lofar2_unb2c_sdp_station_reg_tr_10gbe_eth10g.ip

...station/qsys_lofar2_unb2c_sdp_station_reg_tr_10gbe_mac.ip

...tion/qsys_lofar2_unb2c_sdp_station_reg_xst_udp_monitor.ip

...b2c_sdp_station/quartus/lofar2_unb2c_sdp_station_pins.tcl

...2c_sdp_station/quartus/qsys_lofar2_unb2c_sdp_station.qsys

...station/revisions/lofar2_unb2c_sdp_station_adc/hdllib.cfg

..._station/revisions/lofar2_unb2c_sdp_station_bf/hdllib.cfg