[new uImage] Add libfdt support to mkimage

Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>
diff --git a/tools/mkimage.h b/tools/mkimage.h
index a01977e..cdd52bc 100644
--- a/tools/mkimage.h
+++ b/tools/mkimage.h
@@ -33,6 +33,7 @@
 #include <time.h>
 #include <unistd.h>
 #include <sha1.h>
+#include "fdt_host.h"
 
 #if defined(__BEOS__) || defined(__NetBSD__) || defined(__APPLE__)
 #include <inttypes.h>