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: NPeter Maydell <peter.maydell@linaro.org>
Reviewed-by: NEric Blake <eblake@redhat.com>

scripts/tracetool/backend/simple.py

@@ -42,7 +42,8 @@ def generate_h(event):
 
 
 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"',
         '')

scripts/tracetool/format/events_c.py

@@ -19,6 +19,7 @@ from tracetool import out
 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"',

scripts/tracetool/format/tcg_helper_c.py

@@ -23,6 +23,7 @@ def generate(events, backend):
 
     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"',