oFono's CardAdded signal from can occur after BlueZ's ServicesResolved
signal. In this case the device is created without SCO nodes.
This is fixed by not enforcing device creation on ServicesResolved signal.
The transport is already added in profile_new_connection(), unless
is_new is TRUE
Apart from being wrong, adding the same node twice in a list also causes
spa_list_foreach() to loop forever...
Add a asprintf helper function that handles errors correctly.
Use this in places where we use asprintf to avoid warnings when we
don't check the return value.
This is more in line with wayland and it allows us to create new
interfaces in modules without having to add anything to the type
enum. It also removes some lookups to map type_id to readable
name in debug.
Remove the monitor API, we can use the device API for it. Make sure
we support creating devices (like alsa) from another device (udev).
Use new object.id to store the object id in the object properties. Use
the port.id/node.id etc to make relations to other objects.
