util/cbfstool/flashmap: Correct local includes

Change-Id: I78ba7afd2085c7e9c93e892470111bfee154bb04
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33733
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

util/cbfstool/flashmap/fmap.c

@@ -48,10 +48,9 @@
 #include <limits.h>
 #include <assert.h>
 
-#include <fmap.h>
-#include <valstr.h>
-
+#include "fmap.h"
 #include "kv_pair.h"
+#include "valstr.h"
 
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))