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/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 069c1cf..fef9ecc 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -109,7 +109,7 @@
 
 		/* take the first altsetting with in-bulk + out-bulk;
 		 * remember any status endpoint, just in case;
-		 * ignore other endpoints and altsetttings.
+		 * ignore other endpoints and altsettings.
 		 */
 		for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) {
 			struct usb_host_endpoint	*e;