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/can/pch_can.c b/drivers/net/can/pch_can.c
index e54712b..d11fbb2 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -653,7 +653,7 @@
 	u16 data_reg;
 
 	do {
-		/* Reading the messsage object from the Message RAM */
+		/* Reading the message object from the Message RAM */
 		iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[0].cmask);
 		pch_can_rw_msg_obj(&priv->regs->ifregs[0].creq, obj_num);