platform/chrome: cros_ec_typec: Set parent of partner PD object

In order to tell what Type-C device a PD object belongs to, its parent
needs to be set. Use the Type-C partner USB PD registration wrapper
to set the parent appropriately for PD objects which are created for
connected Type-C partners.

Cc: Benson Leung <[e-mail]>
Cc: Heikki Krogerus <[e-mail]>
Reviewed-by: Heikki Krogerus <[e-mail]>
Signed-off-by: Prashant Malani <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/platform/chrome/cros_ec_typec.c

···
 	if (!resp->source_cap_count && !resp->sink_cap_count)
 		return;
 
-	port->partner_pd = usb_power_delivery_register(NULL, &desc);
+	port->partner_pd = typec_partner_usb_power_delivery_register(port->partner, &desc);
 	if (IS_ERR(port->partner_pd)) {
 		dev_warn(typec->dev, "Failed to register partner PD device, port: %d\n", port_num);
 		return;