boards: arduino due: default to building with MPU support

Builds for Arduino Due shall have MPU support by default.

Signed-off-by: Ioannis Glaropoulos <[email protected]>

Author: ioannisg

boards/arm/arduino_due/arduino_due_defconfig

@@ -6,6 +6,7 @@ CONFIG_SOC_SERIES_SAM3X=y
 CONFIG_SOC_PART_NUMBER_SAM3X8E=y
 CONFIG_BOARD_ARDUINO_DUE=y
 CONFIG_CORTEX_M_SYSTICK=y
+CONFIG_ARM_MPU=y
 CONFIG_CONSOLE=y
 CONFIG_UART_CONSOLE=y
 CONFIG_SERIAL=y