src: Add cyw43_wifi_ap_get_auth() helper function.

Signed-off-by: Damien George <dpgeorge@georgerobotics.com.au>

src/cyw43.h

@@ -317,6 +317,18 @@ static inline void cyw43_wifi_ap_get_ssid(cyw43_t *self, size_t *len, const uint
     *buf = self->ap_ssid;
 }
 
+/*!
+ * \brief Get the security authorisation used in AP mode
+ *
+ * For access point (AP) mode, this method can be used to get the security authorisation mode.
+ *
+ * \param self the driver state object. This should always be \c &cyw43_state
+ * \return the current security authorisation mode for the access point
+ */
+static inline uint32_t cyw43_wifi_ap_get_auth(cyw43_t *self) {
+    return self->ap_auth;
+}
+
 /*!
  * \brief Set the the channel for the access point
  *