recovery: Add support to brick a device.

When recovery starts with --brick, it tries to brick the device by
securely wiping all the partitions as listed in /etc/recovery.brick.

This is designed to support bricking lost devices.

Bug: 27253717
Change-Id: Ib0bd4f0a3bdaca4febc91fce6b682e3ec74354e2
(cherry picked from commit 862a4c11)