V4L/DVB (5861): Use msecs_to_jiffies instead of HZ on bttv, cx88 and saa7134

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h
index c4f656e..8091268 100644
--- a/drivers/media/video/cx88/cx88.h
+++ b/drivers/media/video/cx88/cx88.h
@@ -259,7 +259,7 @@
 #define RESOURCE_VIDEO         2
 #define RESOURCE_VBI           4
 
-#define BUFFER_TIMEOUT     (HZ/2)  /* 0.5 seconds */
+#define BUFFER_TIMEOUT     msecs_to_jiffies(500)  /* 0.5 seconds */
 
 /* buffer for one video frame */
 struct cx88_buffer {