Android passes bootloader messages across reboot via a special “misc” partition. Since Starnix
acts as a de-facto bootloader for Android, we need to be able to read these bootloader messages,
which is done through this interface.
If a remote block device named “misc” is created, keep track of it; this is used by Android
to pass boot parameters to the bootloader. Since Starnix is acting as a de-facto bootloader
for Android, we need to be able to peek into these messages.
Note that this might never be initialized (if the “misc” device never gets registered).