Merge pull request #10498 from xC0000005/MalyanLCDFix

Fix overridden Malyan LCD functions

Marlin/src/lcd/ultralcd.h

 #if ENABLED(ULTRA_LCD) || ENABLED(MALYAN_LCD)
   void lcd_init();
   bool lcd_detected();
+  void lcd_update();
+  void lcd_setalertstatusPGM(const char* message);
+#else
+  inline void lcd_init() {}
+  inline bool lcd_detected() { return true; }
+  inline void lcd_update() {}
+  inline void lcd_setalertstatusPGM(const char* message) { UNUSED(message); }
 #endif
 
 #if ENABLED(ULTRA_LCD)
     constexpr bool lcd_wait_for_move = false;
   #endif
 
-  void lcd_update();
   bool lcd_hasstatus();
   void lcd_setstatus(const char* message, const bool persist=false);
   void lcd_setstatusPGM(const char* message, const int8_t level=0);
     void wait_for_release();
   #endif
 
-#else // no LCD
+#else // MALYAN_LCD or no LCD
 
   constexpr bool lcd_wait_for_move = false;
 
-  inline void lcd_init() {}
-  inline bool lcd_detected() { return true; }
-  inline void lcd_update() {}
   inline void lcd_refresh() {}
   inline void lcd_buttons_update() {}
   inline bool lcd_hasstatus() { return false; }
   inline void lcd_setstatus(const char* const message, const bool persist=false) { UNUSED(message); UNUSED(persist); }
   inline void lcd_setstatusPGM(const char* const message, const int8_t level=0) { UNUSED(message); UNUSED(level); }
   inline void lcd_status_printf_P(const uint8_t level, const char * const fmt, ...) { UNUSED(level); UNUSED(fmt); }
-  inline void lcd_setalertstatusPGM(const char* message) { UNUSED(message); }
   inline void lcd_reset_alert_level() {}
   inline void lcd_reset_status() {}
 

platformio.ini

 lib_ignore   = Adafruit NeoPixel
 src_filter   = ${common.default_src_filter}
 monitor_baud = 250000
+
+[env:malyanm200]
+platform    = ststm32
+framework   = arduino
+board = malyanM200
+build_flags = !python Marlin/src/HAL/HAL_STM32F1/stm32f1_flag_script.py -DMCU_STM32F103CB -D __STM32F1__=1 -std=c++1y -D MOTHERBOARD="BOARD_MALYAN_M200" -DSERIAL_USB -ffunction-sections -fdata-sections -Wl,--gc-sections
+src_filter = ${common.default_src_filter}
+#-<frameworks>
+lib_ignore =
+  U8glib
+  LiquidCrystal_I2C
+  LiquidCrystal
+  NewliquidCrystal
+  LiquidTWI2
+  Adafruit NeoPixel
+  TMC2130Stepper
+  Servo(STM32F1)
+  TMC26XStepper
+  U8glib-HAL
+  TMC2208Stepper
+  c1921b4