[PATCH] fix bool reserved word error in gcc 15

[mark.yang]

* Fix build error with gcc-15.0.1
  http://errors.yoctoproject.org/Errors/Details/850147/
    srcdir/lib/util/include/bool.h:13:5: error: cannot use keyword 'false' as enumeration constant
    13 |     false = 0,
        |     ^~~~~
    srcdir/lib/util/include/bool.h:13:5: note: 'false' is a keyword with '-std=c23' onwards
    srcdir/lib/util/include/bool.h:15:3: error: expected ';', identifier or '(' before 'bool'
    15 | } bool;
        |   ^~~~
    srcdir/lib/util/include/bool.h:15:3: warning: useless type name in empty declaration
    In file included from sleep.c:2:
    srcdir/lib/util/include/bool.h:13:5: error: cannot use keyword 'false' as enumeration constant
    13 |     false = 0,
        |     ^~~~~
    srcdir/lib/util/include/bool.h:13:5: note: 'false' is a keyword with '-std=c23' onwards
    srcdir/lib/util/include/bool.h:15:3: error: expected ';', identifier or '(' before 'bool'
    15 | } bool;
        |   ^~~~

  gcc-15 switched to -std=c23 by default.
  https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=55e3bd376b2214e200fa76d12b67ff259b06c212

Signed-off-by: mark.yang <mark.yang@lge.com>
---
 stable/lib/util/include/bool.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/stable/lib/util/include/bool.h b/stable/lib/util/include/bool.h
index 312477c4..a5e81eb6 100644
--- a/stable/lib/util/include/bool.h
+++ b/stable/lib/util/include/bool.h
@@ -9,10 +9,12 @@
 /* At least the GNU compiler defines __bool_true_false_are_defined */
 #ifndef __bool_true_false_are_defined
 #define __bool_true_false_are_defined
+#if defined __STDC__ && defined __STDC_VERSION__ && __STDC_VERSION__ <= 201710L
 typedef enum {
     false = 0,
     true = 1
 } bool;
 #endif
 #endif
+#endif