MT#55283 move stream_stats to kernel header

Change-Id: I41fc5af5f868fa858f467adf5c367555f37ab2bf

include/statistics.h

@@ -3,14 +3,6 @@
 
 #include "helpers.h"
 #include "bencode.h"
-
-struct packet_stream;
-struct stream_stats {
-	atomic64			packets;
-	atomic64			bytes;
-	atomic64			errors;
-};
-
 #include "control_ng.h"
 #include "graphite.h"
 

kernel-module/common_stats.h

@@ -39,5 +39,10 @@ struct interface_stats_block {
 	struct interface_sampled_stats		sampled;
 };
 
+struct stream_stats {
+	atomic64			packets;
+	atomic64			bytes;
+	atomic64			errors;
+};
 
 #endif