Mention tb.

libraries/base/reorder/src/vhdl/reorder_col_select.vhd

@@ -34,6 +34,8 @@
 --   can be larger than g_nof_ch_in to select channels multiple times.
 -- . The g_nof_ch_in defines the number of complex input data words in a data
 --   period, so 1 complex sample via sosi.im and sosi.re.
+-- . Verified in tb_reorder_col_wide_row_select.vhd via reorder_col_wide_select
+--   that has g_nof_inputs instances of reorder_col_select.
 
 library IEEE, common_lib, technology_lib, dp_lib;
 use IEEE.std_logic_1164.all;