AP_BoardConfig: init chibios IO after boardconfig

this allows for the init to use parameters such as BRD_IO_ENABLE from
AP_BoardConfig

libraries/AP_BoardConfig/board_drivers.cpp

@@ -278,6 +278,11 @@ void AP_BoardConfig::board_setup()
     px4_setup_peripherals();
     px4_setup_pwm();
     px4_setup_safety_mask();
+#elif CONFIG_HAL_BOARD == HAL_BOARD_CHIBIOS
+    // init needs to be done after boardconfig is read so parameters are set
+    hal.gpio->init();
+    hal.rcin->init();
+    hal.rcout->init();
 #endif
     board_setup_uart();
     board_setup_sbus();