Allow the 'active' attribute to list nbcon consoles.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240904120536.115780-15-john.ogness@linutronix.deSigned-off-by: Petr Mladek <pmladek@suse.com>