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/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 388cc12..ff9a01f 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -104,7 +104,7 @@
 		alt = intf->altsetting + tmp;
 
 		/* take the first altsetting with in-bulk + out-bulk;
-		 * ignore other endpoints and altsetttings.
+		 * ignore other endpoints and altsettings.
 		 */
 		for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
 			struct usb_host_endpoint	*e;