[qca-nss-ecm] Accerelate only at RETURN flow for egress IGS interface.

To correctly set the ingress qostags for the flow, accelerate flow
for egress IGS interface only after first packet from the RETURN
direction.

Change-Id: I2fb5055f8cc839a8bc4ac7fd51bc6e415e5dbe69
Signed-off-by: Manish Verma <maniverm@codeaurora.org>
diff --git a/ecm_interface.h b/ecm_interface.h
index 963c643..be80aca 100644
--- a/ecm_interface.h
+++ b/ecm_interface.h
@@ -15,6 +15,9 @@
  */
 
 extern int ecm_interface_src_check;	/* Source interface check flag */
+#ifdef CONFIG_NET_CLS_ACT
+extern int ecm_interface_igs_enabled;	/* IGS enabled check flag */
+#endif
 
 /*
  * struct ecm_interface_route