drivers/base/cpu.c: Fix typo in comment

[ We should make fun of people who can't speel too, but then we'd have
  no time for any real work at all  - Linus ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 6345294..fb10728 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -224,7 +224,7 @@
 	 * by the cpu device.
 	 *
 	 * Never copy this way of doing things, or you too will be made fun of
-	 * on the linux-kerenl list, you have been warned.
+	 * on the linux-kernel list, you have been warned.
 	 */
 }