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>

net/nfs.c

@@ -28,6 +28,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <display_options.h>
 #ifdef CONFIG_SYS_DIRECT_FLASH_NFS
 #include <flash.h>
 #endif

net/tftp.c

@@ -7,6 +7,7 @@
  */
 #include <common.h>
 #include <command.h>
+#include <display_options.h>
 #include <efi_loader.h>
 #include <env.h>
 #include <image.h>