STM32 u8g defines

Suggested by https://github.com/MarlinFirmware/Marlin/issues/14742#issuecomment-515753814

Marlin/src/lcd/dogm/HAL_LCD_com_defines.h

     #define U8G_COM_ST7920_HAL_SW_SPI u8g_com_std_sw_spi_fn
     #define U8G_COM_ST7920_HAL_HW_SPI u8g_com_stm32duino_hw_spi_fn
   #elif defined(ARDUINO_ARCH_STM32)
+    uint8_t u8g_com_arduino_std_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
     #define U8G_COM_HAL_SW_SPI_FN u8g_com_arduino_std_sw_spi_fn
+    uint8_t u8g_com_stm32duino_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
     #define U8G_COM_HAL_HW_SPI_FN u8g_com_stm32duino_hw_spi_fn
+    uint8_t u8g_com_arduino_st7920_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
     #define U8G_COM_ST7920_HAL_SW_SPI u8g_com_arduino_st7920_spi_fn
-    #define U8G_COM_ST7920_HAL_HW_SPI u8g_com_stm32duino_hw_spi_fn
+    uint8_t u8g_com_arduino_st7920_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+    #define U8G_COM_ST7920_HAL_HW_SPI u8g_com_arduino_st7920_hw_spi_fn
   #elif defined(__AVR__)
     uint8_t u8g_com_HAL_AVR_sw_sp_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
     #define U8G_COM_HAL_SW_SPI_FN  u8g_com_HAL_AVR_sw_sp_fn