The functionality of the MPU depends on userspace, which has not
been implemented on AArch64. Therefore we skip that case for now.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
smp and mpu are architecture specific samples and do not apply to
majority of support platforms, so move them to arch/.
Signed-off-by: Anas Nashif <anas.nashif@intel.com>