Bluetooth: btmrvl: fix spelling mistake: "unregester" -> "unregister"

trivial fix to spelling mistake in debug message
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btmrvl_sdio.c

@@ -1574,7 +1574,7 @@ static void btmrvl_sdio_remove(struct sdio_func *func)
 							MODULE_SHUTDOWN_REQ);
 				btmrvl_sdio_disable_host_int(card);
 			}
-			BT_DBG("unregester dev");
+			BT_DBG("unregister dev");
 			card->priv->surprise_removed = true;
 			btmrvl_sdio_unregister_dev(card);
 			btmrvl_remove_card(card->priv);