V4L/DVB (4231): Include some extra headers that we need.

Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index ae2038b..c1a2447 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -23,8 +23,8 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include <linux/firmware.h>
-#include <asm/semaphore.h>
 #include <linux/videodev2.h>
+#include <asm/semaphore.h>
 #include <media/cx2341x.h>
 #include "pvrusb2.h"
 #include "pvrusb2-std.h"