staging: wfx: SSID should be provided to hif_start() even if hidden

SSID is hidden in beacon but firmware has to know to which probe
requests it has to answer.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200115135338.14374-28-Jerome.Pouiller@silabs.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>