bed_level_grid => z_values (also *_virt array)

Marlin/Marlin.h

@@ -313,7 +313,7 @@ float code_value_temp_diff();
 
 #if ENABLED(AUTO_BED_LEVELING_BILINEAR)
   extern int bilinear_grid_spacing[2], bilinear_start[2];
-  extern float bed_level_grid[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y];
+  extern float z_values[GRID_MAX_POINTS_X][GRID_MAX_POINTS_Y];
   float bilinear_z_offset(float logical[XYZ]);
   void set_bed_leveling_enabled(bool enable=true);
 #endif