staging: wilc1000: adjust for management frame register API changes

Adjust to the API changes in cfg80211 for management frame registration.

Fixes: 6cd536fe ("cfg80211: change internal management frame registration API")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200428101400.bac7e94c2bf8.I6a2287b9f68f35aff5f6de409c5ffa388de760e2@changeid


Signed-off-by: Johannes Berg <johannes.berg@intel.com>