Fix some spelling

Marlin/src/HAL/HAL_DUE/u8g_com_HAL_DUE_st7920_sw_spi.cpp

@@ -115,7 +115,7 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
 
       u8g_Delay(5);
 
-      u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* inital RS state: command mode */
+      u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* initial RS state: command mode */
       break;
 
     case U8G_COM_MSG_STOP:

Marlin/src/HAL/HAL_LPC1768/u8g/u8g_com_HAL_LPC1768_ssd_hw_i2c.cpp

@@ -109,7 +109,7 @@ uint8_t u8g_com_HAL_LPC1768_ssd_hw_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_v
     case U8G_COM_MSG_INIT:
       //u8g_com_arduino_digital_write(u8g, U8G_PI_SCL, HIGH);
       //u8g_com_arduino_digital_write(u8g, U8G_PI_SDA, HIGH);
-      //u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* inital RS state: unknown mode */
+      //u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* initial RS state: unknown mode */
 
       u8g_i2c_init(u8g->pin_list[U8G_PI_I2C_OPTION]);
       u8g_com_ssd_I2C_start_sequence(u8g);

Marlin/src/HAL/HAL_LPC1768/u8g/u8g_com_HAL_LPC1768_ssd_sw_i2c.cpp under construction

@@ -178,7 +178,7 @@ uint8_t u8g_com_HAL_LPC1768_ssd_sw_i2c_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_v
 
       //u8g_com_arduino_digital_write(u8g, U8G_PI_SCL, HIGH);
       //u8g_com_arduino_digital_write(u8g, U8G_PI_SDA, HIGH);
-      //u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* inital RS state: unknown mode */
+      //u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* initial RS state: unknown mode */
 
       u8g_i2c_init_sw(u8g->pin_list[U8G_PI_I2C_OPTION]);
       u8g_com_ssd_I2C_start_sequence_sw(u8g);

Marlin/src/HAL/HAL_LPC1768/u8g/u8g_com_HAL_LPC1768_st7920_sw_spi.cpp

@@ -98,7 +98,7 @@ uint8_t u8g_com_HAL_LPC1768_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t ar
       u8g_SetPILevel(u8g, U8G_PI_SCK, 0);
       u8g_SetPILevel(u8g, U8G_PI_MOSI, 0);
 
-      u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* inital RS state: command mode */
+      u8g->pin_list[U8G_PI_A0_STATE] = 0;       /* initial RS state: command mode */
       break;
 
     case U8G_COM_MSG_STOP:

Marlin/src/lcd/dogm/ultralcd_DOGM.cpp

@@ -233,7 +233,7 @@ void MarlinUI::init_lcd() {
     OUT_WRITE(LCD_RESET_PIN, LOW); // perform a clean hardware reset
     _delay_ms(5);
     OUT_WRITE(LCD_RESET_PIN, HIGH);
-    _delay_ms(5); // delay to allow the display to initalize
+    _delay_ms(5); // delay to allow the display to initialize
   #endif
 
   #if PIN_EXISTS(LCD_RESET)