scripts/tracetool: Include qemu/osdep.h in generated .c files

Include qemu/osdep.h as the first include in generated .c files,
so they don't implicitly rely on some other included header
to pull it in.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
diff --git a/scripts/tracetool/backend/simple.py b/scripts/tracetool/backend/simple.py
index e8c2cd5..3246c20 100644
--- a/scripts/tracetool/backend/simple.py
+++ b/scripts/tracetool/backend/simple.py
@@ -42,7 +42,8 @@
 
 
 def generate_c_begin(events):
-    out('#include "trace.h"',
+    out('#include "qemu/osdep.h"',
+        '#include "trace.h"',
         '#include "trace/control.h"',
         '#include "trace/simple.h"',
         '')
diff --git a/scripts/tracetool/format/events_c.py b/scripts/tracetool/format/events_c.py
index 2717ea3..1cc6a49 100644
--- a/scripts/tracetool/format/events_c.py
+++ b/scripts/tracetool/format/events_c.py
@@ -19,6 +19,7 @@
 def generate(events, backend):
     out('/* This file is autogenerated by tracetool, do not edit. */',
         '',
+        '#include "qemu/osdep.h"',
         '#include "trace.h"',
         '#include "trace/generated-events.h"',
         '#include "trace/control.h"',
diff --git a/scripts/tracetool/format/tcg_helper_c.py b/scripts/tracetool/format/tcg_helper_c.py
index 96655a0..afd6e98 100644
--- a/scripts/tracetool/format/tcg_helper_c.py
+++ b/scripts/tracetool/format/tcg_helper_c.py
@@ -23,6 +23,7 @@
 
     out('/* This file is autogenerated by tracetool, do not edit. */',
         '',
+        '#include "qemu/osdep.h"',
         '#include "qemu-common.h"',
         '#include "trace.h"',
         '#include "exec/helper-proto.h"',