[VPR] Code format fix

Author: tangxifan

vpr/src/device/rr_spatial_lookup.h

@@ -90,7 +90,7 @@ class RRSpatialLookup {
                   int ptc,
                   e_side side);
 
-     /* Mirror the last dimension of a look-up, i.e., a list of nodes, from a source coordinate to 
+    /* Mirror the last dimension of a look-up, i.e., a list of nodes, from a source coordinate to 
      * a destination coordinate.
      * This function is mostly need by SOURCE and SINK nodes which are indexable in multiple locations.
      * Considering a bounding box (x, y)->(x + width, y + height) of a multi-height and multi-width grid, 

vpr/src/route/rr_graph2.cpp

@@ -946,7 +946,7 @@ static void load_chan_rr_indices(const int max_chan_width,
                 int node_x = chan;
                 int node_y = start;
                 if (CHANX == type) {
-                   std::swap(node_x, node_y);
+                    std::swap(node_x, node_y);
                 }
 
                 /* If the start of the wire doesn't have a inode,