[qca-nss-sfe] add support for GRE tunnel handling.

Change-Id: Ie4bcdb2df8b13a7c3d63b79eac7ef8f1668ee9c5
Signed-off-by: Nitin Shetty <quic_nitinsj@quicinc.com>
diff --git a/sfe.h b/sfe.h
index f4b96b6..15658e1 100644
--- a/sfe.h
+++ b/sfe.h
@@ -152,6 +152,7 @@
 void sfe_ipv4_destroy_all_rules_for_dev(struct net_device *dev);
 void sfe_ipv4_register_sync_rule_callback(sfe_sync_rule_callback_t callback);
 void sfe_ipv4_update_rule(struct sfe_ipv4_rule_create_msg *msg);
+bool sfe_dev_has_hw_csum(struct net_device *dev);
 
 #ifdef SFE_SUPPORT_IPV6
 /*