Unlike other NXP SoCs currently in Zephyr, the mimxrt1052 has the ARM
MPU rather than the NXP MPU. Start out by enabling it with a simple set
of memory regions for "flash" (ITCM), "ram" (DTCM), and the peripheral
buses. More regions will need to be added when we implement support for
external memories.
Tested with:
- samples/mpu/mpu_stack_guard_test
- tests/kernel/mem_protect/protection
Signed-off-by: Maureen Helm <maureen.helm@nxp.com>