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/arch/powerpc/cpu/mpc85xx/cpu.c b/arch/powerpc/cpu/mpc85xx/cpu.c
index ba9736e..ffa8b60 100644
--- a/arch/powerpc/cpu/mpc85xx/cpu.c
+++ b/arch/powerpc/cpu/mpc85xx/cpu.c
@@ -12,6 +12,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <clock_legacy.h>
+#include <display_options.h>
 #include <init.h>
 #include <irq_func.h>
 #include <log.h>