dispatcher-connection: add new 'disconnect-request' event

When bearer gets an event that should trigger a disconnection but we
cannot disconnect (for example because we're waiting for pppd to close),
we now trigger a new 'disconnect-request' event instead

This was tested with the following hook:
```
$ cat /etc/ModemManager/connection.d/handle-disconnect-request.sh
#!/bin/sh

if [ "$4" != disconnect-request ]; then
	exit 0
fi

iface=$(mmcli -b "$2" -K | awk '/bearer.status.interface/ { print $3 }')

if pkill -f "pppd\>.*\<$iface\>"; then
	logger -t mm-disconnect-request "Killed $iface pppd"
else
	logger -t mm-disconnect-request "No pppd found for $iface"
fi
```

Signed-off-by: Dominique Martinet <dominique.martinet@atmark-techno.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mm-dispatcher-connection.h b/src/mm-dispatcher-connection.h
index 95a10c24..1f8911c1 100644
--- a/src/mm-dispatcher-connection.h
+++ b/src/mm-dispatcher-connection.h
@@ -35,6 +35,7 @@ typedef struct _MMDispatcherConnectionPrivate MMDispatcherConnectionPrivate;
 typedef enum { /*< underscore_name=mm_dispatcher_connection_event >*/
     MM_DISPATCHER_CONNECTION_EVENT_CONNECTED,
     MM_DISPATCHER_CONNECTION_EVENT_DISCONNECTED,
+    MM_DISPATCHER_CONNECTION_EVENT_DISCONNECT_REQUEST,
 } MMDispatcherConnectionEvent;
 
 GType                   mm_dispatcher_connection_get_type   (void);