Preliminary cleanup of #include structure (#9763)

Marlin/src/HAL/HAL.h

Marlin/src/HAL/HAL_DUE/HAL_pinsDebug_Due.h

Marlin/src/HAL/HAL_LCD_defines.h

Marlin/src/HAL/HAL_LPC1768/HAL.h

Marlin/src/HAL/HAL_LPC1768/HAL_spi.cpp

Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.cpp

Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h

Marlin/src/HAL/HAL_LPC1768/SanityCheck.h

Marlin/src/HAL/HAL_LPC1768/SoftwareSPI.h

Marlin/src/HAL/HAL_LPC1768/SoftwareSerial.cpp

Marlin/src/HAL/HAL_LPC1768/SoftwareSerial.h

Marlin/src/HAL/HAL_LPC1768/WInterrupts.cpp

Marlin/src/HAL/HAL_LPC1768/digipot_mcp4451_I2C_routines.c

Marlin/src/HAL/HAL_LPC1768/fastio.h

Marlin/src/HAL/HAL_LPC1768/include/Arduino.h

Marlin/src/HAL/HAL_LPC1768/include/SPI.h

Marlin/src/HAL/HAL_LPC1768/include/Wire.cpp

Marlin/src/HAL/HAL_LPC1768/include/pinmapping.cpp

Marlin/src/HAL/HAL_LPC1768/include/pinmapping.h

Marlin/src/HAL/HAL_LPC1768/include/serial.h