drivers/ipack/devices/ipoctal.h: Fix typo in include guard

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/ipack/devices/ipoctal.h b/drivers/ipack/devices/ipoctal.h
index 28f1c42..7fede0e 100644
--- a/drivers/ipack/devices/ipoctal.h
+++ b/drivers/ipack/devices/ipoctal.h
@@ -12,7 +12,7 @@
  * Software Foundation; version 2 of the License.
  */
 
-#ifndef _IPOCTAL_H
+#ifndef _IPOCTAL_H_
 #define _IPOCTAL_H_
 
 #define NR_CHANNELS		8