arm: 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: 1453832250-766-13-git-send-email-peter.maydell@linaro.org
diff --git a/hw/intc/imx_avic.c b/hw/intc/imx_avic.c
index e0535ff..7027655 100644
--- a/hw/intc/imx_avic.c
+++ b/hw/intc/imx_avic.c
@@ -15,6 +15,7 @@
  * TODO: implement vectors.
  */
 
+#include "qemu/osdep.h"
 #include "hw/intc/imx_avic.h"
 
 #ifndef DEBUG_IMX_AVIC