This changes the data partition name to something more appropriate. We
chose ephemeral to make it very clear that the disk should not be used
for application data.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
In addition to adding a flag, this adds a field to the user data that allows
for extra kernel arguments to be specified.
Signed-off-by: Andrew Rynhard <andrew@andrewrynhard.com>
