net: 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: 1454089805-5470-11-git-send-email-peter.maydell@linaro.org
diff --git a/net/net.c b/net/net.c
index 55ce154..c5e414f 100644
--- a/net/net.c
+++ b/net/net.c
@@ -21,7 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include "config-host.h"
+#include "qemu/osdep.h"
 
 #include "net/net.h"
 #include "clients.h"