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/char/serial167.c b/drivers/char/serial167.c
index 452370a..aee3c0d 100644
--- a/drivers/char/serial167.c
+++ b/drivers/char/serial167.c
@@ -1990,7 +1990,7 @@
 	/*
 	 * Attempt to set up all channels to something reasonable, and
 	 * bang out a INIT_CHAN command.  We should then be able to limit
-	 * the ammount of fiddling we have to do in normal running.
+	 * the amount of fiddling we have to do in normal running.
 	 */
 
 	for (ch = 3; ch >= 0; ch--) {