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/include/net/netlink.h b/include/net/netlink.h
index 8a3906a..02740a9 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -290,7 +290,7 @@
 
 /**
  * nlmsg_data - head of message payload
- * @nlh: netlink messsage header
+ * @nlh: netlink message header
  */
 static inline void *nlmsg_data(const struct nlmsghdr *nlh)
 {