treewide: fix a few typos in comments

- kenrel -> kernel
- whetehr -> whether
- ttt -> tt
- sss -> ss

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/net/ucc_geth_ethtool.c b/drivers/net/ucc_geth_ethtool.c
index 6f92e48..cfd8881 100644
--- a/drivers/net/ucc_geth_ethtool.c
+++ b/drivers/net/ucc_geth_ethtool.c
@@ -6,7 +6,7 @@
  * Author: Li Yang <leoli@freescale.com>
  *
  * Limitation:
- * Can only get/set setttings of the first queue.
+ * Can only get/set settings of the first queue.
  * Need to re-open the interface manually after changing some parameters.
  *
  * This program is free software; you can redistribute  it and/or modify it