staging: wilc1000: remove line over 80 char warnings in set_wiphy_params()

Fix 'line over 80 character' issue reported by checkpatch.pl script in
set_wiphy_params(). Directly used the 'wiphy' pointer received as
function argument instead of using 'priv->dev->ieee80211_ptr->wiphy'.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>