[2.0.x] Add support for LPC1769 at 120 MHz (#9423)

Marlin/src/HAL/HAL_LPC1768/HAL_spi.cpp

Marlin/src/HAL/HAL_LPC1768/HardwareSerial.cpp

Marlin/src/HAL/HAL_LPC1768/HardwareSerial.h

Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.cpp

Marlin/src/HAL/HAL_LPC1768/LPC1768_PWM.h

Marlin/src/HAL/HAL_LPC1768/LPC_SPI.h

Marlin/src/HAL/HAL_LPC1768/SoftwareSPI.cpp

Marlin/src/HAL/HAL_LPC1768/SoftwareSPI.h

Marlin/src/HAL/HAL_LPC1768/main.cpp

Marlin/src/HAL/HAL_LPC1768/pinmapping.h

Marlin/src/HAL/HAL_LPC1768/spi_pins.h

...src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_st7920_sw_spi.cpp

Marlin/src/HAL/HAL_LPC1768/u8g_com_HAL_LPC1768_sw_spi.cpp

Marlin/src/feature/tmc_util.cpp

Marlin/src/lcd/dogm/HAL_LCD_class_defines.h

Marlin/src/lcd/ultralcd_impl_DOGM.h

Marlin/src/module/stepper_indirection.cpp

frameworks/CMSIS/LPC1768/Re-ARM/system_LPC17xx.c

frameworks/CMSIS/LPC1768/lib/chanfs/mmc_ssp.c