Added to-do note for routine that needs to be enhanced in another pull request

Author: sfkhalid

vpr/src/pack/constraints_report.cpp

@@ -1,5 +1,6 @@
 #include "constraints_report.h"
 
+//To-do: alter this routine to check whether whole PartitionRegions are full instead of individual Regions
 bool floorplan_constraints_regions_overfull() {
     GridTileLookup grid_tiles;