Clicker2-stm32: Allow both IEEE 802.15.4 MAC character and network devices to be registered.

configs/clicker2-stm32/src/stm32_mrf24j40.c

@@ -255,7 +255,7 @@ static int stm32_mrf24j40_devsetup(FAR struct stm32_priv_s *priv)
       return -ENODEV;
     }
 
-#if defined(CONFIG_IEEE802154_NETDEV)
+#ifdef CONFIG_IEEE802154_NETDEV
   /* Use the IEEE802.15.4 MAC interface instance to create a 6loWPAN
    * network interface by wrapping the MAC intrface instance in a
    * network device driver via mac802154dev_register().
@@ -268,7 +268,9 @@ static int stm32_mrf24j40_devsetup(FAR struct stm32_priv_s *priv)
             0, ret);
       return ret;
     }
-#elif defined(CONFIG_IEEE802154_MAC_DEV)
+#endif
+
+#ifdef CONFIG_IEEE802154_MAC_DEV
   /* If want to call these APIs from userspace, you have to wrap the MAC
    * interface in a character device viamac802154dev_register().
    */