Merge remote-tracking branch 'upstream/bugfix-2.0.x' into bf2_granty_fix_15017

.circleci/config.yml

Marlin/Configuration.h

Marlin/Configuration_adv.h

Marlin/Makefile

Marlin/src/HAL/HAL_DUE/dogm/u8g_com_HAL_DUE_sw_spi_shared.h

Marlin/src/HAL/HAL_DUE/fastio_Due.h

Marlin/src/HAL/HAL_DUE/usb/compiler.h

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

Marlin/src/HAL/HAL_LPC1768/usb_serial.cpp

Marlin/src/HAL/HAL_SAMD51/Servo_SAMD51.cpp

Marlin/src/HAL/HAL_SAMD51/fastio_SAMD51.h

Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h

Marlin/src/HAL/HAL_STM32/HAL_spi_STM32.cpp

Marlin/src/HAL/HAL_STM32/fastio_STM32.h

Marlin/src/HAL/HAL_STM32/pinsDebug_STM32duino.h

Marlin/src/HAL/HAL_STM32F1/HAL_spi_STM32F1.cpp

Marlin/src/HAL/HAL_STM32F1/SPI.cpp

Marlin/src/HAL/HAL_STM32F1/SPI.h

Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h

Marlin/src/HAL/HAL_STM32F1/persistent_store_flash.cpp