Clarify g_nof_destinations_max design revision parameter and package constants...

Clarify g_nof_destinations_max design revision parameter and package constants c_sdp_bdo_mm_nof_destinations_max = 32 and c_sdp_bdo_reorder_nof_blocks_max = 16.

Closes L2SDP-964

doc/erko_howto_tools.txt

@@ -177,6 +177,7 @@ gen_rom_mmap.py --avalon -d lofar2_unb2c_sdp_station -r lofar2_unb2c_sdp_station
 run_reg unb2c lofar2_unb2c_sdp_station_full
 run_qcomp unb2c lofar2_unb2c_sdp_station_full --clk=CLK
 run_rbf unb2c lofar2_unb2c_sdp_station_full
+==> All in one: build_image unb2c lofar2_unb2c_sdp_station --rev=lofar2_unb2c_sdp_station_full --seed=1
 
 # Run command line synthesis for sdp-arts
 quartus_config unb2b