tree-wide: fix typos "ammount" -> "amount"

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c
index 4cdb975..96937f1 100644
--- a/drivers/usb/serial/opticon.c
+++ b/drivers/usb/serial/opticon.c
@@ -120,7 +120,7 @@
 		}
 	} else {
 		dev_dbg(&priv->udev->dev,
-			"Improper ammount of data received from the device, "
+			"Improper amount of data received from the device, "
 			"%d bytes", urb->actual_length);
 	}