boot_brillo: Enable power on write protection for sensitive area

On Brillo for Edison we need to write protect the first 8MB of the MMC
where the bootloader, factory and security partitions are created.

Change-Id: I53ea5ba9e6fddc8309a4a2ac7e22d2d0e538b74d
Signed-off-by: Mihai Serban <mihai.serban@intel.com>
Reviewed-on: https://android.intel.com/472352
1 file changed