error: New QERR_DUPLICATE_ID

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>

qerror.c

@@ -96,6 +96,10 @@ static const QErrorStringTable qerror_table[] = {
         .error_fmt = QERR_DEVICE_NO_BUS,
         .desc      = "Device '%(device)' has no child bus",
     },
+    {
+        .error_fmt = QERR_DUPLICATE_ID,
+        .desc      = "Duplicate ID '%(id)' for %(object)",
+    },
     {
         .error_fmt = QERR_FD_NOT_FOUND,
         .desc      = "File descriptor named '%(name)' not found",

qerror.h

@@ -88,6 +88,9 @@ QError *qobject_to_qerror(const QObject *obj);
 #define QERR_DEVICE_NO_BUS \
     "{ 'class': 'DeviceNoBus', 'data': { 'device': %s } }"
 
+#define QERR_DUPLICATE_ID \
+    "{ 'class': 'DuplicateId', 'data': { 'id': %s, 'object': %s } }"
+
 #define QERR_FD_NOT_FOUND \
     "{ 'class': 'FdNotFound', 'data': { 'name': %s } }"