tests: 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>
Tested-by: Eric Blake <eblake@redhat.com>
diff --git a/tests/test-io-channel-command.c b/tests/test-io-channel-command.c
index 03cac36..8855437 100644
--- a/tests/test-io-channel-command.c
+++ b/tests/test-io-channel-command.c
@@ -18,6 +18,7 @@
  *
  */
 
+#include "qemu/osdep.h"
 #include "io/channel-command.h"
 #include "io-channel-helpers.h"