Fix LCD for Tevo Tornado (#16474)

config/examples/Tevo/Tornado/V2 (MKS GEN-L)/Configuration.h

 // http://reprap.org/wiki/RepRapDiscount_Full_Graphic_Smart_Controller
 //
 #define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
+#define ST7920_DELAY_1 DELAY_NS(150)
+#define ST7920_DELAY_2 DELAY_NS(150)
+#define ST7920_DELAY_3 DELAY_NS(150)
 
 //
 // ReprapWorld Graphical LCD