Clean up whitespace

Marlin/src/HAL/STM32/HAL.cpp

Marlin/src/HAL/STM32/eeprom_flash.cpp

Marlin/src/HAL/STM32/timers.cpp

Marlin/src/HAL/STM32/watchdog.cpp

Marlin/src/HAL/STM32_F4_F7/HAL.cpp

Marlin/src/HAL/STM32_F4_F7/STM32F4/timers.cpp

Marlin/src/HAL/STM32_F4_F7/STM32F7/timers.cpp

Marlin/src/HAL/STM32_F4_F7/Servo.cpp

Marlin/src/HAL/STM32_F4_F7/eeprom.cpp

Marlin/src/HAL/STM32_F4_F7/watchdog.cpp

Marlin/src/HAL/TEENSY35_36/eeprom.cpp

Marlin/src/HAL/TEENSY35_36/watchdog.cpp

Marlin/src/HAL/shared/backtrace/backtrace.cpp