Add support for Mks Robin TFT display (#12706)

* Add support for MKS Robin TFT display

- Add support for MKS Robin TFT display and encoder for MKS Robin board.
- Generic 128x64 UI with x2 upscale is used (for now).
- Tested on MKS Robin TFT V2.0 with ST7789V controller.

Marlin/src/inc/Conditionals_LCD.h

@@ -209,6 +209,15 @@
    #define NEWPANEL
  #endif
 
+ /**
+  * FSMC/SPI TFT PANELS
+  */
+ #if ENABLED(MKS_ROBIN_TFT)
+   #define ULTRA_LCD
+   #define DOGLCD
+   #define ULTIPANEL
+ #endif
+
 /**
  * I2C PANELS
  */