Fix MKS UI compile (#22388)

Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>

Marlin/src/MarlinCore.cpp

 #if HAS_TFT_LVGL_UI
   #include "lcd/extui/mks_ui/tft_lvgl_configuration.h"
   #include "lcd/extui/mks_ui/draw_ui.h"
-  #include "lcd/extui/mks_ui/mks_hardware_test.h"
+  #include "lcd/extui/mks_ui/mks_hardware.h"
   #include <lvgl.h>
 #endif
 

Marlin/src/lcd/extui/mks_ui/draw_error_message.cpp

 
 #include "draw_ui.h"
 #include <lv_conf.h>
-
 #include "tft_lvgl_configuration.h"
-
 #include "SPI_TFT.h"
 #include "../../../inc/MarlinConfig.h"
-
-#if ENABLED(MKS_TEST)
-  #include "mks_hardware_test.h"
-#endif
+#include "mks_hardware.h"
 
 static lv_obj_t *scr;
 

Marlin/src/lcd/extui/mks_ui/draw_ready_print.cpp

   #include "draw_touch_calibration.h"
 #endif
 
-#if ENABLED(MKS_TEST)
-  #include "mks_hardware_test.h"
-#endif
-
+#include "mks_hardware.h"
 #include <stdio.h>
 
 #define ICON_POS_Y          38
   ZERO(disp_state_stack._disp_state);
   scr = lv_screen_create(PRINT_READY_UI, "");
 
-  if (mks_test_flag == 0x1E) {
+  if (TERN0(SDSUPPORT, mks_test_flag == 0x1E)) {
     // Create image buttons
     buttonTool = lv_imgbtn_create(scr, "F:/bmp_tool.bin", event_handler, ID_TOOL);
 

Marlin/src/lcd/extui/mks_ui/draw_ui.cpp

 #endif
 
 #if ENABLED(MKS_TEST)
-  #include "mks_hardware_test.h"
+  #include "mks_hardware.h"
 #endif
 
 CFG_ITMES gCfgItems;
 void LV_TASK_HANDLER() {
   lv_task_handler();
 
-  #if ENABLED(MKS_TEST)
+  #if BOTH(MKS_TEST, SDSUPPORT)
     if (mks_test_flag == 0x1E) mks_hardware_test();
   #endif
 

Marlin/src/lcd/extui/mks_ui/mks_hardware_test.cpp → Marlin/src/lcd/extui/mks_ui/mks_hardware.cpp

 
 #if ENABLED(MKS_TEST)
 
-  #include "mks_hardware_test.h"
+  #include "mks_hardware.h"
 
   bool pw_det_sta, pw_off_sta, mt_det_sta;
   #if PIN_EXISTS(MT_DET_2)
   disp_string(100, 165, buf, 0xFFFF, 0x0000);
 }
 
-uint8_t mks_test_flag = 0;
-const char *MKSTestPath = "MKS_TEST";
-
 #if ENABLED(SDSUPPORT)
+  uint8_t mks_test_flag = 0;
+  const char *MKSTestPath = "MKS_TEST";
   void mks_test_get() {
     SdFile dir, root = card.getroot();
     if (dir.open(&root, MKSTestPath, O_RDONLY))

Marlin/src/lcd/extui/mks_ui/mks_hardware_test.h → Marlin/src/lcd/extui/mks_ui/mks_hardware.h

  */
 #pragma once
 
+#include "../../../inc/MarlinConfigPre.h"
+
 #include <lvgl.h>
 
-void mks_gpio_test();
-void mks_hardware_test();
-void mks_test_get();
+// Functions for MKS_TEST
+#if ENABLED(MKS_TEST)
+  void mks_gpio_test();
+  void mks_hardware_test();
+  void mks_test_get();
+#endif
 
-void disp_char_1624(uint16_t x, uint16_t y, uint8_t c, uint16_t charColor, uint16_t bkColor);
+// String display and assets
 void disp_string(uint16_t x, uint16_t y, const char * string, uint16_t charColor, uint16_t bkColor);
 void disp_assets_update();
 void disp_assets_update_progress(const char *msg);
 
-extern uint8_t mks_test_flag;
+#if ENABLED(SDSUPPORT)
+  extern uint8_t mks_test_flag;
+#endif

Marlin/src/lcd/extui/mks_ui/pic_manager.cpp

 #include "draw_ui.h"
 #include "pic_manager.h"
 #include "draw_ready_print.h"
-
-#if ENABLED(MKS_TEST)
-  #include "mks_hardware_test.h"
-#endif
-
+#include "mks_hardware.h"
 #include "SPIFlashStorage.h"
 #include "../../../libs/W25Qxx.h"
-
 #include "../../../sd/cardreader.h"
 #include "../../../MarlinCore.h"
 

Marlin/src/lcd/extui/mks_ui/tft_lvgl_configuration.cpp

 #include "draw_ready_print.h"
 
 #include "pic_manager.h"
-#include "mks_hardware_test.h"
+#include "mks_hardware.h"
 #include "draw_ui.h"
 #include "SPIFlashStorage.h"
 #include <lvgl.h>
 
   if (ready) lv_draw_ready_print();
 
-  #if ENABLED(MKS_TEST)
+  #if BOTH(MKS_TEST, SDSUPPORT)
     if (mks_test_flag == 0x1E) mks_gpio_test();
   #endif
 }