greybus: operation: handle static connections

Use the host-device device and connection name for error messages, as
the operation code can not assume that a connection has a bundle.

Note that the "initial" svc connection has never had a bundle.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>