common: Drop display_options.h from common header

Move this out of the common header and include it only where needed.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/kosagi/novena/novena.c b/board/kosagi/novena/novena.c
index 0e1b4a0..815ecf5 100644
--- a/board/kosagi/novena/novena.c
+++ b/board/kosagi/novena/novena.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <display_options.h>
 #include <dm.h>
 #include <eeprom.h>
 #include <init.h>