doc: nrf70: Document the Kconfig option for WPA3-SAE PSA

WPA3-SAE is default disabled, document the option.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

doc/nrf/app_dev/device_guides/nrf70/wifi_advanced_security_modes.rst

@@ -228,3 +228,9 @@ Enable PSA support
 To enable the nRF70 PSA crypto support in your applications, use the :kconfig:option:`CONFIG_HOSTAP_CRYPTO_ALT_PSA` Kconfig option.
 
 The Wi-Fi connection process is similar to the non-PSA mode, however, the only difference is that the cryptographic operations are performed using PSA crypto APIs.
+
+WPA3-SAE support
+----------------
+
+To enable WPA3-SAE support in your applications, use the :kconfig:option:`CONFIG_HOSTAP_CRYPTO_WPA3_PSA` Kconfig option.
+This is disabled by default.