ieee802154: ieee802154_dev: fix align typo

This patch fix a typo and fix align instead allign.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/net/mac802154/ieee802154_dev.c b/net/mac802154/ieee802154_dev.c
index 6af6a24..086d4a9 100644
--- a/net/mac802154/ieee802154_dev.c
+++ b/net/mac802154/ieee802154_dev.c
@@ -263,7 +263,7 @@
 	 * +-----------------------+
 	 *
 	 * Due to ieee802154 layer isn't aware of driver and MAC structures,
-	 * so lets allign them here.
+	 * so lets align them here.
 	 */
 
 	priv_size = ALIGN(sizeof(*priv), NETDEV_ALIGN) + priv_data_len;