The ARM_MPU_NRF52X option is just selecting ARM_MPU option,
which could be also controlled through menuconfig.
This commit removes the ARM_MPU_NRF52X option and replaces
its usage by ARM_MPU option.
Signed-off-by: Piotr Zięcik <piotr.ziecik@nordicsemi.no>
This commit adds support for the nrf52840_pca10059 board.
The flash partitions are configured to allow migrating from
the stock bootloader to MCUBoot.
Signed-off-by: Emanuele Di Santo <emdi@nordicsemi.no>