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, with the change
to target/s390x/gen-features.c manually reverted, and blank lines
around deletions collapsed.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-3-armbru@redhat.com>
diff --git a/tests/ptimer-test.c b/tests/ptimer-test.c
index 5d1a2a8..4148889 100644
--- a/tests/ptimer-test.c
+++ b/tests/ptimer-test.c
@@ -8,9 +8,9 @@
  *
  */
 
+#include "qemu/osdep.h"
 #include <glib/gprintf.h>
 
-#include "qemu/osdep.h"
 #include "qemu/main-loop.h"
 #include "hw/ptimer.h"