greybus: set route before sending packets

The route for a connection needs to be set *before* we initialize
the connection.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
greybus: update AP id service message

Rename and renumber the values for the AP ID service message
and related symbols to match the recently-updated spec.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>