usb: typec: Make active on port altmode writable

The active property of port altmode should be writable (to prevent or
allow partner altmodes from entering) and needs to be part of
typec_altmode_desc so we can initialize the port to an inactive state if
desired.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@chromium.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Benson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20241213153543.v5.3.I794566684ab2965e209f326b08232006eff333f8@changeid


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>