qapi: 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>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1454089805-5470-8-git-send-email-peter.maydell@linaro.org
diff --git a/qapi/qapi-util.c b/qapi/qapi-util.c
index bcdc94d..8afb12e 100644
--- a/qapi/qapi-util.c
+++ b/qapi/qapi-util.c
@@ -10,8 +10,8 @@
  *
  */
 
+#include "qemu/osdep.h"
 #include "qemu-common.h"
-#include "qapi/error.h"
 #include "qapi/util.h"
 
 int qapi_enum_parse(const char * const lookup[], const char *buf,