tree 9d2c83c32caf346061fd81cc7e390c513dad4dc3
parent ca18e7fe5a7ad0faa4cd0fce872f44acd5c2a034
author David Anderson <dvander@google.com> 1574293627 -0800
committer David Anderson <dvander@google.com> 1574295832 -0800

bootloader_message: Add a magic header to the Virtual A/B message block.

This adds a sanity check in addition to the version number in case misc
contains random bits.

Bug: 139156011
Test: manual test
Change-Id: Ie4f3731d2b1795340881c88e0c4eec9cd4432653