cfg80211: add missing policy for NL80211_ATTR_STATUS_CODE

stable inclusion
from linux-4.19.108
commit 0fb31bd53a5e27394916758173eb748c5e0dbd47
CVE: CVE-2020-27068

--------------------------------

[ Upstream commit ea750801 ]

The nl80211_policy is missing for NL80211_ATTR_STATUS_CODE attribute.
As a result, for strictly validated commands, it's assumed to not be
supported.

Signed-off-by: Sergey Matyukevich <sergey.matyukevich.os@quantenna.com>
Link: https://lore.kernel.org/r/20200213131608.10541-2-sergey.matyukevich.os@quantenna.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>