security/memory/memory.c: Include 'stdbool' instead of 'stdint'

Change-Id: I4eac157c8b48c1c10178bb84822b6462c245deca
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/60550
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Felix Singer <felixsinger@posteo.net>

src/security/memory/memory.c

@@ -1,7 +1,8 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <stdint.h>
 #include <security/intel/txt/txt.h>
+#include <stdbool.h>
+
 #include "memory.h"
 
 /**