libqrtr: Don't require socket to be bound for lookup
libqrtr: Don't require socket to be bound for lookup

There's no reason to require that the socket to be bound to a specific
port in order to register a lookup, the transmission of the lookup
request will autobind the socket to a port for us.

Also drop the node and port from the payload, as qrtr-ns will register
the lookup on the source sq, rather than the passed port.

Signed-off-by: Bjorn Andersson <6e6fda072d932515099508d6d220572c68e9add5@linaro.org>

andersson/qrtr,andersson/qrtr,andersson/qrtr