ueventd: Add bootdevice links support for selinux

Adding bootdevice support to define context on common symlink.

Change-Id: I25d7239614539d1ef2c9920e2c321824ee2c664b
mkbootimg: Support 32K 64K and 128K pagesizes

Signed-off-by: ChampionSwimmer <android@championswimmer.tk>
Signed-off-by: Michael Bestas <mikeioannina@gmail.com>

Change-Id: I0ee608b74a1daefe536b9247f99368f3e043f93d