common: Drop linux/delay.h from common header

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/video/anx9804.c b/drivers/video/anx9804.c
index fc2f431..b050c42 100644
--- a/drivers/video/anx9804.c
+++ b/drivers/video/anx9804.c
@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <i2c.h>
+#include <linux/delay.h>
 #include "anx98xx-edp.h"
 #include "anx9804.h"