Get E2END from pins, fix Linux buffer

Marlin/src/HAL/HAL_DUE/persistent_store_eeprom.cpp

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

Marlin/src/HAL/HAL_LINUX/persistent_store_impl.cpp

Marlin/src/HAL/HAL_STM32F1/persistent_store_sdcard.cpp

Marlin/src/HAL/HAL_STM32F4/EEPROM_Emul/eeprom_emul.h

Marlin/src/pins/pins_ARMED.h

Marlin/src/pins/pins_BLACK_STM32F407VE.h

Marlin/src/pins/pins_GTM32_PRO_VB.h

Marlin/src/pins/pins_JGAURORA_A5S_A1.h

Marlin/src/pins/pins_RADDS.h

Marlin/src/pins/pins_RAMPS_LINUX.h

Marlin/src/pins/pins_RUMBA32.h

Marlin/src/pins/pins_STM32F4.h