RSNE/RSNXE overriding for AP

RSNE/RSNXE overriding for AP

Allow hostapd to be configured to advertised two separate sets of
RSNE/RSNXE parameters so that RSNE/RSNXE can use a reduced set of
capabilities (e.g., WPA2-Personal only) for supporting deployed STAs
that have issues with transition modes while the new override elements
can use a newer security option (e.g., WPA3-Personal only) for STAs that
support the new mechanism.

Signed-off-by: Jouni Malinen <quic_jouni@quicinc.com>