Fix the compile error

Author: kimiatkh

vpr/src/base/constraints_load.h

@@ -4,7 +4,7 @@
 #include "region.h"
 #include "partition.h"
 #include "partition_region.h"
-#include "vpr_constraints.h"
+#include "user_place_constraints.h"
 #include "vtr_vector.h"
 
 ///@brief Used to print vpr's floorplanning constraints to an echo file "vpr_constraints.echo"

vpr/src/base/user_place_constraints.h

@@ -112,6 +112,6 @@ class UserPlaceConstraints {
 };
 
 ///@brief used to print floorplanning constraints data from a VprConstraints object
-void print_placement_constraints(FILE* fp, UserPlaceConstraints constraints);
+void print_placement_constraints(FILE* fp, const UserPlaceConstraints& constraints);
 
 #endif /* USER_PLACE_CONSTRAINTS_H */