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/cpu/bmips_cpu.c b/drivers/cpu/bmips_cpu.c
index 172bc99..3dd04fa 100644
--- a/drivers/cpu/bmips_cpu.c
+++ b/drivers/cpu/bmips_cpu.c
@@ -9,6 +9,7 @@
 
 #include <common.h>
 #include <cpu.h>
+#include <display_options.h>
 #include <dm.h>
 #include <errno.h>
 #include <init.h>