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/firmware/efivars.c b/drivers/firmware/efivars.c
index ff0c373..5629a0c 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -321,7 +321,7 @@
 
 /*
  * Generic read/write functions that call the specific functions of
- * the atttributes...
+ * the attributes...
  */
 static ssize_t efivar_attr_show(struct kobject *kobj, struct attribute *attr,
 				char *buf)