Improve Anet A6 config (#16280)

config/examples/Anet/A6/Configuration.h

 // - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28).
 // - Prevent Z homing when the Z probe is outside bed area.
 //
-#define Z_SAFE_HOMING
+//#define Z_SAFE_HOMING
 
 #if ENABLED(Z_SAFE_HOMING)
   #define Z_SAFE_HOMING_X_POINT ((X_BED_SIZE) / 2)    // X point for Z homing when homing all axes (G28).
 // If you have a speaker that can produce tones, enable it here.
 // By default Marlin assumes you have a buzzer with a fixed frequency.
 //
-//#define SPEAKER
+#define SPEAKER
 
 //
 // The duration and frequency for the UI feedback sound.
 // Note: Test audio output with the G-Code:
 //  M300 S<frequency Hz> P<duration ms>
 //
-//#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 2
-//#define LCD_FEEDBACK_FREQUENCY_HZ 5000
+#define LCD_FEEDBACK_FREQUENCY_DURATION_MS 40
+#define LCD_FEEDBACK_FREQUENCY_HZ 200
 
 //=============================================================================
 //======================== LCD / Controller Selection =========================
 //
 // Note: Details on connecting to the Anet V1.0 controller are in the file pins_ANET_10.h
 //
-//#define REPRAP_DISCOUNT_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
 // https://reprapworld.com/?products_details&products_id/1218
 // A clone of the RepRapDiscount full graphics display but with
 // different pins/wiring (see pins_ANET_10.h).
 //
-#define ANET_FULL_GRAPHICS_LCD
+//#define ANET_FULL_GRAPHICS_LCD
 
 //
 // AZSMZ 12864 LCD with SD