tree 006fce362447b84b2c5f4681f41bbf56c0f5fae3
parent b162551a30ce45e991fbd24f0647b6320d3b9b67
author Yabin Cui <yabinc@google.com> 1459983138 -0700
committer Yabin Cui <yabinc@google.com> 1460141216 -0700

uncrypt: split libbootloader_message_writer for reuse.

init and vold also need to write bootloader message, so
split this function from uncrypt into a separate library.

Bug: 27176738
Change-Id: If9b0887b4f6ffab6162d9cb47a6ceb7eedd60b4d