pkt_sched: type should be __u32 in header

Using u32 in this header breaks the build of iptables.
Signed-off-by: NChuck Ebbert <cebbert@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/pkt_sched.h

@@ -515,7 +515,7 @@ enum
 
 struct tc_drr_stats
 {
-	u32	deficit;
+	__u32	deficit;
 };
 
 #endif