genetlink: add function genl_has_listeners()
genetlink: add function genl_has_listeners()

This function is the counterpart of the function netlink_has_listeners().

Signed-off-by: Nicolas Dichtel <7864bb1e0e12322ea18ea731d051b95b75140567@6wind.com>
Acked-by: Pravin B Shelar <95dcc1879f3489c0d5163907cdd946775296b2dd@nicira.com>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs