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/usb/host/imx21-dbg.c b/drivers/usb/host/imx21-dbg.c
index 512f647..6d75334 100644
--- a/drivers/usb/host/imx21-dbg.c
+++ b/drivers/usb/host/imx21-dbg.c
@@ -384,7 +384,7 @@
 	seq_printf(s, "%s %d:\n"
 		"cc=0X%02X\n"
 		"scheduled frame %d (%d)\n"
-		"submittted frame %d (%d)\n"
+		"submitted frame %d (%d)\n"
 		"completed frame %d (%d)\n"
 		"requested length=%d\n"
 		"completed length=%d\n\n",