include: Add missing <linux/types.h>

These files have many "Linux" style types in them, add <linux/types.h>

Signed-off-by: Tom Rini <trini@konsulko.com>

include/display.h

@@ -6,6 +6,8 @@
 #ifndef _DISPLAY_H
 #define _DISPLAY_H
 
+#include <linux/types.h>
+
 struct udevice;
 struct display_timing;