modules: hostap: Fix DPP soft AP security type show issue.

[Description]
After starting a DPP soft ap, enter 'wifi ap status'.
Security is shown as 'UNKNOW'.

[Root Cause]
1. Start a DPP soft ap:
   wifi ap enable -s xxx -c x -p xxx -k 11
   The parameter '-k 11' corresponds to
   zephyr security type 'WIFI_SECURITY_TYPE_DPP'.
2. hapd_config_network() will be called to config a
new hostap bss.
3. Filed 'bss->wpa_key_mgmt' is set to
   WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_DPP.
4. When try to get security type of DPP soft ap,
there is no corresponding zephyr security type.

[Fix]
Add enhance code to convert the security type
to zephyr DPP security type.

Signed-off-by: Qiankun Li <qiankun.li@nxp.com>