Move disconnect command handling to a common place

Move out the disconnect command handling from |ctrl_iface.c| to
|wpa_supplicant.c| so that it can be reused across the different
control interfaces (socket, dbus & binder).

Change-Id: Ibfc38fc4036917f254338434ee82c90170f68359
Signed-off-by: Roshan Pius <rpius@google.com>
1 file changed