dbus-cxx: Include missing <utility> header

gcc-12 does error about this explicitly.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-core/dbus-cxx/dbus-cxx_2.1.0.bb

@@ -7,6 +7,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=4cf0188f02184e1e84b9586ac53c3f83"
 
 SRC_URI = "git://github.com/dbus-cxx/dbus-cxx.git;branch=master;protocol=https \
            file://0001-Include-typeinfo-for-typeid.patch \
+           file://0001-include-utility-header.patch \
 "
 SRC_URI:append:libc-musl = "file://fix_build_musl.patch"
 SRCREV = "73532d6a5faae9c721c2cc9535b8ef32d4d18264"

meta-oe/recipes-core/dbus-cxx/files/0001-include-utility-header.patch

@@ -0,0 +1,32 @@
+From 63170cfcfbf483716ce2599e165db80713fc2706 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Tue, 12 Apr 2022 06:47:19 -0700
+Subject: [PATCH] include utility header
+
+Needed for exchange from std namespace
+
+Fixes
+dbus-cxx/variant.cpp:135:25: error: 'exchange' is not a member of 'std'
+
+Upstream-Status: Submitted [https://github.com/dbus-cxx/dbus-cxx/pull/98]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ dbus-cxx/variant.cpp | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/dbus-cxx/variant.cpp b/dbus-cxx/variant.cpp
+index bcf2684..97b622c 100644
+--- a/dbus-cxx/variant.cpp
++++ b/dbus-cxx/variant.cpp
+@@ -11,6 +11,7 @@
+ #include <dbus-cxx/dbus-cxx-private.h>
+ #include <dbus-cxx/signatureiterator.h>
+ #include <stdint.h>
++#include <utility>
+ #include "enums.h"
+ #include "path.h"
+ #include "signature.h"
+-- 
+2.35.1
+