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/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c
index f389e5e..1903562 100644
--- a/drivers/ddr/fsl/main.c
+++ b/drivers/ddr/fsl/main.c
@@ -11,6 +11,7 @@
  */
 
 #include <common.h>
+#include <display_options.h>
 #include <dm.h>
 #include <i2c.h>
 #include <fsl_ddr_sdram.h>