mimxrt,stm32: Set the security mode for the default WiFi AP.

The default CYW43 WiFi AP settings were missing the security mode, leaving
the AP in open mode by default.  That's changed by this commit to use
WPA/WPA2 by default.
Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

ports/mimxrt/main.c

@@ -87,6 +87,7 @@ int main(void) {
         memcpy(&buf[0], "PYBD", 4);
         mp_hal_get_mac_ascii(MP_HAL_MAC_WLAN0, 8, 4, (char *)&buf[4]);
         cyw43_wifi_ap_set_ssid(&cyw43_state, 8, buf);
+        cyw43_wifi_ap_set_auth(&cyw43_state, CYW43_AUTH_WPA2_MIXED_PSK);
         cyw43_wifi_ap_set_password(&cyw43_state, 8, (const uint8_t *)"pybd0123");
     }
     #endif

ports/stm32/main.c

@@ -477,6 +477,7 @@ void stm32_main(uint32_t reset_mode) {
         memcpy(&buf[0], "PYBD", 4);
         mp_hal_get_mac_ascii(MP_HAL_MAC_WLAN0, 8, 4, (char *)&buf[4]);
         cyw43_wifi_ap_set_ssid(&cyw43_state, 8, buf);
+        cyw43_wifi_ap_set_auth(&cyw43_state, CYW43_AUTH_WPA2_MIXED_PSK);
         cyw43_wifi_ap_set_password(&cyw43_state, 8, (const uint8_t *)"pybd0123");
     }
     #endif