qga: Clean up includes

Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1454089805-5470-9-git-send-email-peter.maydell@linaro.org
diff --git a/qga/commands.c b/qga/commands.c
index 58568d8..5b56786 100644
--- a/qga/commands.c
+++ b/qga/commands.c
@@ -10,6 +10,7 @@
  * See the COPYING file in the top-level directory.
  */
 
+#include "qemu/osdep.h"
 #include <glib.h>
 #include "qga/guest-agent-core.h"
 #include "qga-qmp-commands.h"